157091514568 has 8 divisors (see below), whose sum is σ = 294546589830. Its totient is φ = 78545757280.

The previous prime is 157091514563. The next prime is 157091514571. The reversal of 157091514568 is 865415190751.

It can be written as a sum of positive squares in only one way, i.e., 120771540484 + 36319974084 = 347522^2 + 190578^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (157091514563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9818219653 + ... + 9818219668.

Almost surely, 2^157091514568 is an apocalyptic number.

It is an amenable number.

157091514568 is a deficient number, since it is larger than the sum of its proper divisors (137455075262).

157091514568 is a wasteful number, since it uses less digits than its factorization.

157091514568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19636439327 (or 19636439323 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 52.

The spelling of 157091514568 in words is "one hundred fifty-seven billion, ninety-one million, five hundred fourteen thousand, five hundred sixty-eight".