64252640792775 has 48 divisors (see below), whose sum is σ = 110116660654080. Its totient is φ = 33023897155200.

The previous prime is 64252640792761. The next prime is 64252640792861. The reversal of 64252640792775 is 57729704625246.

It is not a de Polignac number, because 64252640792775 - 2¹¹ = 64252640790727 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57259272 + ... + 58370621.

It is an arithmetic number, because the mean of its divisors is an integer number (2294097096960).

Almost surely, 2^{64252640792775} is an apocalyptic number.

64252640792775 is a deficient number, since it is larger than the sum of its proper divisors (45864019861305).

64252640792775 is a wasteful number, since it uses less digits than its factorization.

64252640792775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115630176 (or 115630171 counting only the distinct ones).

The product of its (nonzero) digits is 355622400, while the sum is 66.

The spelling of 64252640792775 in words is "sixty-four trillion, two hundred fifty-two billion, six hundred forty million, seven hundred ninety-two thousand, seven hundred seventy-five".