12157760028 has 24 divisors (see below), whose sum is σ = 28374610432. Its totient is φ = 4051657584.

The previous prime is 12157760023. The next prime is 12157760051. The reversal of 12157760028 is 82006775121.

It is a super-2 number, since 2×12157760028² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12157760023) 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, 60550 + ... + 167277.

Almost surely, 2^12157760028 is an apocalyptic number.

It is an amenable number.

12157760028 is an abundant number, since it is smaller than the sum of its proper divisors (16216850404).

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

12157760028 is a wasteful number, since it uses less digits than its factorization.

12157760028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232281 (or 232279 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 39.

The spelling of 12157760028 in words is "twelve billion, one hundred fifty-seven million, seven hundred sixty thousand, twenty-eight".