12551371698 has 32 divisors (see below), whose sum is σ = 25949329920. Its totient is φ = 4043076480.

The previous prime is 12551371687. The next prime is 12551371739. The reversal of 12551371698 is 89617315521.

It is a Curzon 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, 84286 + ... + 179462.

It is an arithmetic number, because the mean of its divisors is an integer number (810916560).

Almost surely, 2^12551371698 is an apocalyptic number.

12551371698 is an abundant number, since it is smaller than the sum of its proper divisors (13397958222).

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

12551371698 is a wasteful number, since it uses less digits than its factorization.

12551371698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95922.

The product of its digits is 453600, while the sum is 48.

The spelling of 12551371698 in words is "twelve billion, five hundred fifty-one million, three hundred seventy-one thousand, six hundred ninety-eight".