51630556165255 has 64 divisors (see below), whose sum is σ = 63676996411392. Its totient is φ = 40176511764480.

The previous prime is 51630556165241. The next prime is 51630556165259. The reversal of 51630556165255 is 55256165503615.

It is a de Polignac number, because none of the positive numbers 2^k-51630556165255 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51630556165196 and 51630556165205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51630556165259) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13505244274 + ... + 13505248096.

It is an arithmetic number, because the mean of its divisors is an integer number (994953068928).

Almost surely, 2^{51630556165255} is an apocalyptic number.

51630556165255 is a deficient number, since it is larger than the sum of its proper divisors (12046440246137).

51630556165255 is a wasteful number, since it uses less digits than its factorization.

51630556165255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5288.

The product of its (nonzero) digits is 20250000, while the sum is 55.

The spelling of 51630556165255 in words is "fifty-one trillion, six hundred thirty billion, five hundred fifty-six million, one hundred sixty-five thousand, two hundred fifty-five".