51656509970094 has 16 divisors (see below), whose sum is σ = 106875537869520. Its totient is φ = 16625083668480.

The previous prime is 51656509970059. The next prime is 51656509970113. The reversal of 51656509970094 is 49007990565615.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148438246867 + ... + 148438247214.

It is an arithmetic number, because the mean of its divisors is an integer number (6679721116845).

Almost surely, 2^{51656509970094} is an apocalyptic number.

51656509970094 is an abundant number, since it is smaller than the sum of its proper divisors (55219027899426).

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

51656509970094 is a wasteful number, since it uses less digits than its factorization.

51656509970094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296876494115.

The product of its (nonzero) digits is 91854000, while the sum is 66.

The spelling of 51656509970094 in words is "fifty-one trillion, six hundred fifty-six billion, five hundred nine million, nine hundred seventy thousand, ninety-four".