12511345398 has 32 divisors (see below), whose sum is σ = 26573305824. Its totient is φ = 3913469952.

The previous prime is 12511345373. The next prime is 12511345409. The reversal of 12511345398 is 89354311521.

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 15 ways as a sum of consecutive naturals, for example, 147615 + ... + 216362.

It is an arithmetic number, because the mean of its divisors is an integer number (830415807).

Almost surely, 2^12511345398 is an apocalyptic number.

12511345398 is an abundant number, since it is smaller than the sum of its proper divisors (14061960426).

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

12511345398 is a wasteful number, since it uses less digits than its factorization.

12511345398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364336.

The product of its digits is 129600, while the sum is 42.

The spelling of 12511345398 in words is "twelve billion, five hundred eleven million, three hundred forty-five thousand, three hundred ninety-eight".