12533638026 has 64 divisors (see below), whose sum is σ = 31157634816. Its totient is φ = 3272832000.

The previous prime is 12533637997. The next prime is 12533638031. The reversal of 12533638026 is 62083633521.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58495 + ... + 168786.

It is an arithmetic number, because the mean of its divisors is an integer number (486838044).

Almost surely, 2^12533638026 is an apocalyptic number.

12533638026 is an abundant number, since it is smaller than the sum of its proper divisors (18623996790).

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

12533638026 is a wasteful number, since it uses less digits than its factorization.

12533638026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227407.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 12533638026 in words is "twelve billion, five hundred thirty-three million, six hundred thirty-eight thousand, twenty-six".