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168112788128252 = 221117474781908867
BaseRepresentation
bin100110001110010111001111…
…000001001100000111111100
3211001020102111020212000102122
4212032113033001030013330
5134013324442230101002
61353313540530142112
750260514415442412
oct4616271701140774
9731212436760378
10168112788128252
1149625262230650
1216a31474721938
1372a5c77616bc6
142d729b93c12b2
151467eed0726a2
hex98e5cf04c1fc

168112788128252 has 48 divisors (see below), whose sum is σ = 347051818003968. Its totient is φ = 70389698507520.

The previous prime is 168112788128221. The next prime is 168112788128333. The reversal of 168112788128252 is 252821887211861.

It is a happy number.

168112788128252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2390919278 + ... + 2390989589.

It is an arithmetic number, because the mean of its divisors is an integer number (7230246208416).

Almost surely, 2168112788128252 is an apocalyptic number.

It is an amenable number.

168112788128252 is an abundant number, since it is smaller than the sum of its proper divisors (178939029875716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168112788128252 is a wasteful number, since it uses less digits than its factorization.

168112788128252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4781908946 (or 4781908944 counting only the distinct ones).

The product of its digits is 13762560, while the sum is 62.

The spelling of 168112788128252 in words is "one hundred sixty-eight trillion, one hundred twelve billion, seven hundred eighty-eight million, one hundred twenty-eight thousand, two hundred fifty-two".

Divisors: 1 2 4 11 17 22 34 44 47 68 94 187 188 374 517 748 799 1034 1598 2068 3196 8789 17578 35156 4781908867 9563817734 19127635468 52600997537 81292450739 105201995074 162584901478 210403990148 224749716749 325169802956 449499433498 894216958129 898998866996 1788433916258 2472246884239 3576867832516 3820745184733 4944493768478 7641490369466 9888987536956 15282980738932 42028197032063 84056394064126 168112788128252