51651055164 has 24 divisors (see below), whose sum is σ = 120526801360. Its totient is φ = 17215922304.

The previous prime is 51651055163. The next prime is 51651055189. The reversal of 51651055164 is 46155015615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51651055163) 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, 72102 + ... + 329394.

Almost surely, 2^51651055164 is an apocalyptic number.

It is an amenable number.

51651055164 is an abundant number, since it is smaller than the sum of its proper divisors (68875746196).

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

51651055164 is a wasteful number, since it uses less digits than its factorization.

51651055164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274029 (or 274027 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 39.

The spelling of 51651055164 in words is "fifty-one billion, six hundred fifty-one million, fifty-five thousand, one hundred sixty-four".