158251705768 has 16 divisors (see below), whose sum is σ = 319546713780. Its totient is φ = 73039248768.

The previous prime is 158251705763. The next prime is 158251705849. The reversal of 158251705768 is 867507152851.

It can be written as a sum of positive squares in 2 ways, for example, as 156735226404 + 1516479364 = 395898^2 + 38942^2 .

It is not an unprimeable number, because it can be changed into a prime (158251705763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760825405 + ... + 760825612.

Almost surely, 2^158251705768 is an apocalyptic number.

It is an amenable number.

158251705768 is an abundant number, since it is smaller than the sum of its proper divisors (161295008012).

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

158251705768 is a wasteful number, since it uses less digits than its factorization.

158251705768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521651036 (or 1521651032 counting only the distinct ones).

The product of its (nonzero) digits is 4704000, while the sum is 55.

The spelling of 158251705768 in words is "one hundred fifty-eight billion, two hundred fifty-one million, seven hundred five thousand, seven hundred sixty-eight".