13256498220 has 72 divisors (see below), whose sum is σ = 43178318064. Its totient is φ = 3030056064.

The previous prime is 13256498219. The next prime is 13256498267. The reversal of 13256498220 is 2289465231.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2251567 + ... + 2257446.

It is an arithmetic number, because the mean of its divisors is an integer number (599698862).

Almost surely, 2^13256498220 is an apocalyptic number.

13256498220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13256498220 is an abundant number, since it is smaller than the sum of its proper divisors (29921819844).

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

13256498220 is a wasteful number, since it uses less digits than its factorization.

13256498220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4509039 (or 4509030 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 13256498220 in words is "thirteen billion, two hundred fifty-six million, four hundred ninety-eight thousand, two hundred twenty".