51475469688036 has 18 divisors (see below), whose sum is σ = 130118548378182. Its totient is φ = 17158489896000.

The previous prime is 51475469687977. The next prime is 51475469688101. The reversal of 51475469688036 is 63088696457415.

51475469688036 is a `hidden beast` number, since 5 + 1 + 4 + 75 + 469 + 68 + 8 + 0 + 36 = 666.

It can be written as a sum of positive squares in only one way, i.e., 33286899470400 + 18188570217636 = 5769480^2 + 4264806^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 714937078965 + ... + 714937079036.

Almost surely, 2^{51475469688036} is an apocalyptic number.

It is an amenable number.

51475469688036 is an abundant number, since it is smaller than the sum of its proper divisors (78643078690146).

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

51475469688036 is a wasteful number, since it uses less digits than its factorization.

51475469688036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429874158011 (or 1429874158006 counting only the distinct ones).

The product of its (nonzero) digits is 1045094400, while the sum is 72.

The spelling of 51475469688036 in words is "fifty-one trillion, four hundred seventy-five billion, four hundred sixty-nine million, six hundred eighty-eight thousand, thirty-six".