64626440400599 has 12 divisors (see below), whose sum is σ = 82012031974728. Its totient is φ = 50358265246800.

The previous prime is 64626440400481. The next prime is 64626440400601. The reversal of 64626440400599 is 99500404462646.

It is not a de Polignac number, because 64626440400599 - 2⁸ = 64626440400343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64626440409599) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59950315232 + ... + 59950316309.

It is an arithmetic number, because the mean of its divisors is an integer number (6834335997894).

Almost surely, 2^{64626440400599} is an apocalyptic number.

64626440400599 is a deficient number, since it is larger than the sum of its proper divisors (17385591574129).

64626440400599 is a wasteful number, since it uses less digits than its factorization.

64626440400599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119900631566 (or 119900631559 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 59.

The spelling of 64626440400599 in words is "sixty-four trillion, six hundred twenty-six billion, four hundred forty million, four hundred thousand, five hundred ninety-nine".