64012756791 has 16 divisors (see below), whose sum is σ = 87581104128. Its totient is φ = 41563339200.

The previous prime is 64012756757. The next prime is 64012756817. The reversal of 64012756791 is 19765721046.

It is not a de Polignac number, because 64012756791 - 2⁹ = 64012756279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64012756791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64012756711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371095 + ... + 515496.

It is an arithmetic number, because the mean of its divisors is an integer number (5473819008).

Almost surely, 2^64012756791 is an apocalyptic number.

64012756791 is a deficient number, since it is larger than the sum of its proper divisors (23568347337).

64012756791 is a wasteful number, since it uses less digits than its factorization.

64012756791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887222.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 64012756791 in words is "sixty-four billion, twelve million, seven hundred fifty-six thousand, seven hundred ninety-one".