36556226021 has 24 divisors (see below), whose sum is σ = 43514153856. Its totient is φ = 30607362240.

The previous prime is 36556225999. The next prime is 36556226023. The reversal of 36556226021 is 12062265563.

It is not a de Polignac number, because 36556226021 - 2²⁶ = 36489117157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36556226023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1184630 + ... + 1215096.

It is an arithmetic number, because the mean of its divisors is an integer number (1813089744).

Almost surely, 2^36556226021 is an apocalyptic number.

It is an amenable number.

36556226021 is a deficient number, since it is larger than the sum of its proper divisors (6957927835).

36556226021 is a wasteful number, since it uses less digits than its factorization.

36556226021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31049 (or 31042 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 36556226021 in words is "thirty-six billion, five hundred fifty-six million, two hundred twenty-six thousand, twenty-one".