64604663385 has 16 divisors (see below), whose sum is σ = 103407948096. Its totient is φ = 34442324928.

The previous prime is 64604663359. The next prime is 64604663411. The reversal of 64604663385 is 58336640646.

It is an interprime number because it is at equal distance from previous prime (64604663359) and next prime (64604663411).

It is not a de Polignac number, because 64604663385 - 2²¹ = 64602566233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 803839 + ... + 880548.

It is an arithmetic number, because the mean of its divisors is an integer number (6462996756).

Almost surely, 2^64604663385 is an apocalyptic number.

It is an amenable number.

64604663385 is a deficient number, since it is larger than the sum of its proper divisors (38803284711).

64604663385 is a wasteful number, since it uses less digits than its factorization.

64604663385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686952.

The product of its (nonzero) digits is 7464960, while the sum is 51.

The spelling of 64604663385 in words is "sixty-four billion, six hundred four million, six hundred sixty-three thousand, three hundred eighty-five".