64504334511 has 12 divisors (see below), whose sum is σ = 93225207088. Its totient is φ = 42978760704.

The previous prime is 64504334501. The next prime is 64504334549. The reversal of 64504334511 is 11543340546.

64504334511 is a `hidden beast` number, since 64 + 50 + 4 + 3 + 34 + 511 = 666.

It is not a de Polignac number, because 64504334511 - 2¹⁹ = 64503810223 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 (64504334501) 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, 1993810 + ... + 2025903.

Almost surely, 2^64504334511 is an apocalyptic number.

64504334511 is a deficient number, since it is larger than the sum of its proper divisors (28720872577).

64504334511 is a wasteful number, since it uses less digits than its factorization.

64504334511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021502 (or 4021499 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 64504334511 in words is "sixty-four billion, five hundred four million, three hundred thirty-four thousand, five hundred eleven".