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22812401881 = 175338366107
BaseRepresentation
bin10101001111101110…
…011010000011011001
32011212211120002100101
4111033232122003121
5333204433330011
614251352535401
71435212134203
oct251756320331
964784502311
1022812401881
1197470081a5
1245079b1561
1321c7257a69
141165a17773
158d7b052c1
hex54fb9a0d9

22812401881 has 16 divisors (see below), whose sum is σ = 24674678784. Its totient is φ = 21010073344.

The previous prime is 22812401879. The next prime is 22812401929. The reversal of 22812401881 is 18810421822.

It is a cyclic number.

It is not a de Polignac number, because 22812401881 - 21 = 22812401879 is a prime.

It is a super-2 number, since 2×228124018812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22812401881.

It is not an unprimeable number, because it can be changed into a prime (22812401831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312030 + ... + 378136.

It is an arithmetic number, because the mean of its divisors is an integer number (1542167424).

Almost surely, 222812401881 is an apocalyptic number.

It is an amenable number.

22812401881 is a deficient number, since it is larger than the sum of its proper divisors (1862276903).

22812401881 is a wasteful number, since it uses less digits than its factorization.

22812401881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66560.

The product of its (nonzero) digits is 16384, while the sum is 37.

It can be divided in two parts, 2281240 and 1881, that added together give a square (2283121 = 15112).

The spelling of 22812401881 in words is "twenty-two billion, eight hundred twelve million, four hundred one thousand, eight hundred eighty-one".

Divisors: 1 17 53 383 901 6511 20299 66107 345083 1123819 3503671 25318981 59562407 430422677 1341905993 22812401881