51705620136470 has 16 divisors (see below), whose sum is σ = 93070490308848. Its totient is φ = 20682164929440.

The previous prime is 51705620136463. The next prime is 51705620136497. The reversal of 51705620136470 is 7463102650715.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7746104 + ... + 12783323.

It is an arithmetic number, because the mean of its divisors is an integer number (5816905644303).

Almost surely, 2^{51705620136470} is an apocalyptic number.

51705620136470 is a deficient number, since it is larger than the sum of its proper divisors (41364870172378).

51705620136470 is a wasteful number, since it uses less digits than its factorization.

51705620136470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20781295.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 51705620136470 in words is "fifty-one trillion, seven hundred five billion, six hundred twenty million, one hundred thirty-six thousand, four hundred seventy".