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1321163731340 = 225162740601221
BaseRepresentation
bin10011001110011011011…
…111101011000110001100
311200022011011122101202122
4103032123133223012030
5133121220403400330
62450533443512112
7164310445266125
oct23163337530614
94608134571678
101321163731340
1146a336535852
12194073088638
139777b9081ab
1447d3223d04c
1524576e155e5
hex1339b7eb18c

1321163731340 has 24 divisors (see below), whose sum is σ = 2776149155472. Its totient is φ = 528140669760.

The previous prime is 1321163731331. The next prime is 1321163731399. The reversal of 1321163731340 is 431373611231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321163731340.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20268071 + ... + 20333150.

It is an arithmetic number, because the mean of its divisors is an integer number (115672881478).

Almost surely, 21321163731340 is an apocalyptic number.

1321163731340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321163731340 is an abundant number, since it is smaller than the sum of its proper divisors (1454985424132).

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

1321163731340 is a wasteful number, since it uses less digits than its factorization.

1321163731340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40602857 (or 40602855 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The spelling of 1321163731340 in words is "one trillion, three hundred twenty-one billion, one hundred sixty-three million, seven hundred thirty-one thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 1627 3254 6508 8135 16270 32540 40601221 81202442 162404884 203006105 406012210 812024420 66058186567 132116373134 264232746268 330290932835 660581865670 1321163731340