64641373363375 has 8 divisors (see below), whose sum is σ = 80672433957648. Its totient is φ = 51713098690600.

The previous prime is 64641373363363. The next prime is 64641373363381. The reversal of 64641373363375 is 57336337314646.

It is not a de Polignac number, because 64641373363375 - 2²¹ = 64641371266223 is a prime.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

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, 258565493329 + ... + 258565493578.

It is an arithmetic number, because the mean of its divisors is an integer number (10084054244706).

Almost surely, 2^{64641373363375} is an apocalyptic number.

64641373363375 is a deficient number, since it is larger than the sum of its proper divisors (16031060594273).

64641373363375 is an equidigital number, since it uses as much as digits as its factorization.

64641373363375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517130986922 (or 517130986912 counting only the distinct ones).

The product of its digits is 205752960, while the sum is 61.

The spelling of 64641373363375 in words is "sixty-four trillion, six hundred forty-one billion, three hundred seventy-three million, three hundred sixty-three thousand, three hundred seventy-five".