5120064503665 has 8 divisors (see below), whose sum is σ = 6144197365800. Its totient is φ = 4095971628672.

The previous prime is 5120064503647. The next prime is 5120064503693. The reversal of 5120064503665 is 5663054600215.

It can be written as a sum of positive squares in 4 ways, for example, as 829598537329 + 4290465966336 = 910823^2 + 2071344^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5120064503665 - 2²¹ = 5120062406513 is a prime.

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, 9714364 + ... + 10227853.

It is an arithmetic number, because the mean of its divisors is an integer number (768024670725).

Almost surely, 2^{5120064503665} is an apocalyptic number.

It is an amenable number.

5120064503665 is a deficient number, since it is larger than the sum of its proper divisors (1024132862135).

5120064503665 is a wasteful number, since it uses less digits than its factorization.

5120064503665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19993571.

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

The spelling of 5120064503665 in words is "five trillion, one hundred twenty billion, sixty-four million, five hundred three thousand, six hundred sixty-five".