36644620055156 has 24 divisors (see below), whose sum is σ = 64145638677120. Its totient is φ = 18317295374400.

The previous prime is 36644620055123. The next prime is 36644620055159. The reversal of 36644620055156 is 65155002644663.

It is a junction number, because it is equal to n+sod(n) for n = 36644620055098 and 36644620055107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36644620055159) 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, 248720360 + ... + 248867648.

It is an arithmetic number, because the mean of its divisors is an integer number (2672734944880).

Almost surely, 2^{36644620055156} is an apocalyptic number.

It is an amenable number.

36644620055156 is a deficient number, since it is larger than the sum of its proper divisors (27501018621964).

36644620055156 is a wasteful number, since it uses less digits than its factorization.

36644620055156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163895 (or 163893 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 53.

The spelling of 36644620055156 in words is "thirty-six trillion, six hundred forty-four billion, six hundred twenty million, fifty-five thousand, one hundred fifty-six".