168158765432 has 16 divisors (see below), whose sum is σ = 360340211760. Its totient is φ = 72068042304.

The previous prime is 168158765417. The next prime is 168158765443. The reversal of 168158765432 is 234567851861.

It is a super-2 number, since 2×168158765432² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 3002835097 = 168158765432 / (1 + 6 + 8 + 1 + 5 + 8 + 7 + 6 + 5 + 4 + 3 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501417493 + ... + 1501417604.

It is an arithmetic number, because the mean of its divisors is an integer number (22521263235).

Almost surely, 2^168158765432 is an apocalyptic number.

It is an amenable number.

168158765432 is an abundant number, since it is smaller than the sum of its proper divisors (192181446328).

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

168158765432 is a wasteful number, since it uses less digits than its factorization.

168158765432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002835110 (or 3002835106 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 56.

The spelling of 168158765432 in words is "one hundred sixty-eight billion, one hundred fifty-eight million, seven hundred sixty-five thousand, four hundred thirty-two".