51343620215065 has 16 divisors (see below), whose sum is σ = 61811373012480. Its totient is φ = 40942214262720.

The previous prime is 51343620214969. The next prime is 51343620215113. The reversal of 51343620215065 is 56051202634315.

It is not a de Polignac number, because 51343620215065 - 2²⁷ = 51343485997337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125014471 + ... + 125424499.

It is an arithmetic number, because the mean of its divisors is an integer number (3863210813280).

Almost surely, 2^{51343620215065} is an apocalyptic number.

It is an amenable number.

51343620215065 is a deficient number, since it is larger than the sum of its proper divisors (10467752797415).

51343620215065 is a wasteful number, since it uses less digits than its factorization.

51343620215065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490872.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 51343620215065 in words is "fifty-one trillion, three hundred forty-three billion, six hundred twenty million, two hundred fifteen thousand, sixty-five".