12798488521 has 32 divisors (see below), whose sum is σ = 16625638400. Its totient is φ = 9567512640.

The previous prime is 12798488513. The next prime is 12798488561. The reversal of 12798488521 is 12588489721.

It is not a de Polignac number, because 12798488521 - 2³ = 12798488513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12798488561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 645526 + ... + 665056.

It is an arithmetic number, because the mean of its divisors is an integer number (519551200).

Almost surely, 2^12798488521 is an apocalyptic number.

It is an amenable number.

12798488521 is a deficient number, since it is larger than the sum of its proper divisors (3827149879).

12798488521 is a wasteful number, since it uses less digits than its factorization.

12798488521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19949.

The product of its digits is 2580480, while the sum is 55.

The spelling of 12798488521 in words is "twelve billion, seven hundred ninety-eight million, four hundred eighty-eight thousand, five hundred twenty-one".