157986034398744 has 32 divisors (see below), whose sum is σ = 394966737612720. Its totient is φ = 52661791250816.

The previous prime is 157986034398721. The next prime is 157986034398811. The reversal of 157986034398744 is 447893430689751.

It is a super-2 number, since 2×157986034398744² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157986034398744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7852767 + ... + 19432910.

Almost surely, 2^{157986034398744} is an apocalyptic number.

It is an amenable number.

157986034398744 is an abundant number, since it is smaller than the sum of its proper divisors (236980703213976).

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

157986034398744 is a wasteful number, since it uses less digits than its factorization.

157986034398744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27526939 (or 27526935 counting only the distinct ones).

The product of its (nonzero) digits is 4389396480, while the sum is 78.

The spelling of 157986034398744 in words is "one hundred fifty-seven trillion, nine hundred eighty-six billion, thirty-four million, three hundred ninety-eight thousand, seven hundred forty-four".