12157937816 has 128 divisors (see below), whose sum is σ = 26012620800. Its totient is φ = 5298670080.

The previous prime is 12157937767. The next prime is 12157937843. The reversal of 12157937816 is 61873975121.

It is a happy number.

It is a super-3 number, since 3×12157937816³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10022426 + ... + 10023638.

It is an arithmetic number, because the mean of its divisors is an integer number (203223600).

Almost surely, 2^12157937816 is an apocalyptic number.

It is an amenable number.

12157937816 is an abundant number, since it is smaller than the sum of its proper divisors (13854682984).

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

12157937816 is a wasteful number, since it uses less digits than its factorization.

12157937816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369 (or 1365 counting only the distinct ones).

The product of its digits is 635040, while the sum is 50.

The spelling of 12157937816 in words is "twelve billion, one hundred fifty-seven million, nine hundred thirty-seven thousand, eight hundred sixteen".