12258877128 has 64 divisors (see below), whose sum is σ = 30825144000. Its totient is φ = 4062619392.

The previous prime is 12258877117. The next prime is 12258877153. The reversal of 12258877128 is 82177885221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6040818 + ... + 6042846.

It is an arithmetic number, because the mean of its divisors is an integer number (481642875).

Almost surely, 2^12258877128 is an apocalyptic number.

It is an amenable number.

12258877128 is an abundant number, since it is smaller than the sum of its proper divisors (18566266872).

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

12258877128 is a wasteful number, since it uses less digits than its factorization.

12258877128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374 (or 3370 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 51.

The spelling of 12258877128 in words is "twelve billion, two hundred fifty-eight million, eight hundred seventy-seven thousand, one hundred twenty-eight".