51606664147 has 16 divisors (see below), whose sum is σ = 53738899200. Its totient is φ = 49498318240.

The previous prime is 51606664133. The next prime is 51606664163. The reversal of 51606664147 is 74146660615.

It is not a de Polignac number, because 51606664147 - 2²³ = 51598275539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51606664097 and 51606664106.

It is not an unprimeable number, because it can be changed into a prime (51606664117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14580504 + ... + 14584042.

It is an arithmetic number, because the mean of its divisors is an integer number (3358681200).

Almost surely, 2^51606664147 is an apocalyptic number.

51606664147 is a deficient number, since it is larger than the sum of its proper divisors (2132235053).

51606664147 is a wasteful number, since it uses less digits than its factorization.

51606664147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6746.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 51606664147 in words is "fifty-one billion, six hundred six million, six hundred sixty-four thousand, one hundred forty-seven".