51059956641 has 16 divisors (see below), whose sum is σ = 71668224000. Its totient is φ = 32246086608.

The previous prime is 51059956631. The next prime is 51059956663. The reversal of 51059956641 is 14665995015.

It is not a de Polignac number, because 51059956641 - 2¹³ = 51059948449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51059956631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1152400 + ... + 1195886.

It is an arithmetic number, because the mean of its divisors is an integer number (4479264000).

Almost surely, 2^51059956641 is an apocalyptic number.

51059956641 is the 130461-st octagonal number.

51059956641 is the 142913-rd centered pentagonal number.

It is an amenable number.

51059956641 is a deficient number, since it is larger than the sum of its proper divisors (20608267359).

51059956641 is a wasteful number, since it uses less digits than its factorization.

51059956641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64108.

The product of its (nonzero) digits is 1458000, while the sum is 51.

The spelling of 51059956641 in words is "fifty-one billion, fifty-nine million, nine hundred fifty-six thousand, six hundred forty-one".