51656671700 has 36 divisors (see below), whose sum is σ = 113768051712. Its totient is φ = 20354268000.

The previous prime is 51656671621. The next prime is 51656671711. The reversal of 51656671700 is 717665615.

It is a super-2 number, since 2×51656671700² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3848276 + ... + 3861675.

Almost surely, 2^51656671700 is an apocalyptic number.

51656671700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51656671700 is an abundant number, since it is smaller than the sum of its proper divisors (62111380012).

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

51656671700 is a wasteful number, since it uses less digits than its factorization.

51656671700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7710032 (or 7710025 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 44.

The spelling of 51656671700 in words is "fifty-one billion, six hundred fifty-six million, six hundred seventy-one thousand, seven hundred".