64373377328565 has 16 divisors (see below), whose sum is σ = 103005347077248. Its totient is φ = 34329820124736.

The previous prime is 64373377328549. The next prime is 64373377328599. The reversal of 64373377328565 is 56582377337346.

It is not a de Polignac number, because 64373377328565 - 2⁴ = 64373377328549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64373377328565.

It is a congruent number.

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, 165285502 + ... + 165674511.

It is an arithmetic number, because the mean of its divisors is an integer number (6437834192328).

Almost surely, 2^{64373377328565} is an apocalyptic number.

It is an amenable number.

64373377328565 is a deficient number, since it is larger than the sum of its proper divisors (38631969748683).

64373377328565 is a wasteful number, since it uses less digits than its factorization.

64373377328565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330972988.

The product of its digits is 1600300800, while the sum is 69.

The spelling of 64373377328565 in words is "sixty-four trillion, three hundred seventy-three billion, three hundred seventy-seven million, three hundred twenty-eight thousand, five hundred sixty-five".