51343723618508 has 12 divisors (see below), whose sum is σ = 91546827961680. Its totient is φ = 25187487058032.

The previous prime is 51343723618489. The next prime is 51343723618543. The reversal of 51343723618508 is 80581632734315.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121093687568 + ... + 121093687991.

It is an arithmetic number, because the mean of its divisors is an integer number (7628902330140).

Almost surely, 2^{51343723618508} is an apocalyptic number.

It is an amenable number.

51343723618508 is a deficient number, since it is larger than the sum of its proper divisors (40203104343172).

51343723618508 is a wasteful number, since it uses less digits than its factorization.

51343723618508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242187375616 (or 242187375614 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 56.

The spelling of 51343723618508 in words is "fifty-one trillion, three hundred forty-three billion, seven hundred twenty-three million, six hundred eighteen thousand, five hundred eight".