51661650150056 has 64 divisors (see below), whose sum is σ = 105112422360000. Its totient is φ = 23726998089216.

The previous prime is 51661650149959. The next prime is 51661650150073. The reversal of 51661650150056 is 65005105616615.

51661650150056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51661650150056² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38801951 + ... + 40111278.

It is an arithmetic number, because the mean of its divisors is an integer number (1642381599375).

Almost surely, 2^{51661650150056} is an apocalyptic number.

It is an amenable number.

51661650150056 is an abundant number, since it is smaller than the sum of its proper divisors (53450772209944).

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

51661650150056 is a wasteful number, since it uses less digits than its factorization.

51661650150056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78913386 (or 78913382 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 51661650150056 in words is "fifty-one trillion, six hundred sixty-one billion, six hundred fifty million, one hundred fifty thousand, fifty-six".