12157332278 has 96 divisors (see below), whose sum is σ = 23288832000. Its totient is φ = 4716968256.

The previous prime is 12157332263. The next prime is 12157332301. The reversal of 12157332278 is 87223375121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20028251 + ... + 20028857.

It is an arithmetic number, because the mean of its divisors is an integer number (242592000).

Almost surely, 2^12157332278 is an apocalyptic number.

12157332278 is a deficient number, since it is larger than the sum of its proper divisors (11131499722).

12157332278 is a wasteful number, since it uses less digits than its factorization.

12157332278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 907 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The spelling of 12157332278 in words is "twelve billion, one hundred fifty-seven million, three hundred thirty-two thousand, two hundred seventy-eight".