51630316511611 has 4 divisors (see below), whose sum is σ = 51652221612192. Its totient is φ = 51608411411032.

The previous prime is 51630316511561. The next prime is 51630316511663. The reversal of 51630316511611 is 11611561303615.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51630316511611 - 2²³ = 51630308123003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51630316911611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10952546755 + ... + 10952551468.

It is an arithmetic number, because the mean of its divisors is an integer number (12913055403048).

Almost surely, 2^{51630316511611} is an apocalyptic number.

51630316511611 is a deficient number, since it is larger than the sum of its proper divisors (21905100581).

51630316511611 is a wasteful number, since it uses less digits than its factorization.

51630316511611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21905100580.

The product of its (nonzero) digits is 48600, while the sum is 40.

The spelling of 51630316511611 in words is "fifty-one trillion, six hundred thirty billion, three hundred sixteen million, five hundred eleven thousand, six hundred eleven".