64872990735 has 16 divisors (see below), whose sum is σ = 118624897536. Its totient is φ = 29656224288.

The previous prime is 64872990733. The next prime is 64872990757. The reversal of 64872990735 is 53709927846.

It is not a de Polignac number, because 64872990735 - 2¹ = 64872990733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64872990733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308918899 + ... + 308919108.

It is an arithmetic number, because the mean of its divisors is an integer number (7414056096).

Almost surely, 2^64872990735 is an apocalyptic number.

64872990735 is a deficient number, since it is larger than the sum of its proper divisors (53751906801).

64872990735 is a wasteful number, since it uses less digits than its factorization.

64872990735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617838022.

The product of its (nonzero) digits is 22861440, while the sum is 60.

The spelling of 64872990735 in words is "sixty-four billion, eight hundred seventy-two million, nine hundred ninety thousand, seven hundred thirty-five".