157899122768 has 40 divisors (see below), whose sum is σ = 308255166240. Its totient is φ = 78349864320.

The previous prime is 157899122761. The next prime is 157899122779. The reversal of 157899122768 is 867221998751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157899122761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6060746 + ... + 6086742.

It is an arithmetic number, because the mean of its divisors is an integer number (7706379156).

Almost surely, 2^157899122768 is an apocalyptic number.

It is an amenable number.

157899122768 is a deficient number, since it is larger than the sum of its proper divisors (150356043472).

157899122768 is a wasteful number, since it uses less digits than its factorization.

157899122768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28875 (or 28869 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 65.

The spelling of 157899122768 in words is "one hundred fifty-seven billion, eight hundred ninety-nine million, one hundred twenty-two thousand, seven hundred sixty-eight".