64009907965 has 32 divisors (see below), whose sum is σ = 78316318080. Its totient is φ = 50216544000.

The previous prime is 64009907959. The next prime is 64009907977. The reversal of 64009907965 is 56970990046.

It is not a de Polignac number, because 64009907965 - 2³ = 64009907957 is a prime.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40080547 + ... + 40082143.

It is an arithmetic number, because the mean of its divisors is an integer number (2447384940).

Almost surely, 2^64009907965 is an apocalyptic number.

It is an amenable number.

64009907965 is a deficient number, since it is larger than the sum of its proper divisors (14306410115).

64009907965 is a wasteful number, since it uses less digits than its factorization.

64009907965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413.

The product of its (nonzero) digits is 3674160, while the sum is 55.

The spelling of 64009907965 in words is "sixty-four billion, nine million, nine hundred seven thousand, nine hundred sixty-five".