13198522656 has 48 divisors (see below), whose sum is σ = 37795772448. Its totient is φ = 3999552000.

The previous prime is 13198522651. The next prime is 13198522693. The reversal of 13198522656 is 65622589131.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (13198522651) 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, 6248245 + ... + 6250356.

It is an arithmetic number, because the mean of its divisors is an integer number (787411926).

Almost surely, 2^13198522656 is an apocalyptic number.

13198522656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13198522656 is an abundant number, since it is smaller than the sum of its proper divisors (24597249792).

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

13198522656 is a wasteful number, since it uses less digits than its factorization.

13198522656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12498625 (or 12498617 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The spelling of 13198522656 in words is "thirteen billion, one hundred ninety-eight million, five hundred twenty-two thousand, six hundred fifty-six".