51639050050164 has 36 divisors (see below), whose sum is σ = 130532394341440. Its totient is φ = 17212970376720.

The previous prime is 51639050050163. The next prime is 51639050050183. The reversal of 51639050050164 is 46105005093615.

51639050050164 is a `hidden beast` number, since 5 + 1 + 6 + 3 + 90 + 50 + 0 + 501 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×51639050050164² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51639050050163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13280799 + ... + 16722969.

Almost surely, 2^{51639050050164} is an apocalyptic number.

It is an amenable number.

51639050050164 is an abundant number, since it is smaller than the sum of its proper divisors (78893344291276).

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

51639050050164 is a wasteful number, since it uses less digits than its factorization.

51639050050164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3858900 (or 3858895 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 51639050050164 in words is "fifty-one trillion, six hundred thirty-nine billion, fifty million, fifty thousand, one hundred sixty-four".