64135303215 has 48 divisors (see below), whose sum is σ = 109628352288. Its totient is φ = 31906889728.

The previous prime is 64135303207. The next prime is 64135303229. The reversal of 64135303215 is 51230353146.

It is not a de Polignac number, because 64135303215 - 2³ = 64135303207 is a prime.

It is a super-2 number, since 2×64135303215² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 3246247 + ... + 3265943.

It is an arithmetic number, because the mean of its divisors is an integer number (2283924006).

Almost surely, 2^64135303215 is an apocalyptic number.

64135303215 is a deficient number, since it is larger than the sum of its proper divisors (45493049073).

64135303215 is a wasteful number, since it uses less digits than its factorization.

64135303215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19948 (or 19835 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

The spelling of 64135303215 in words is "sixty-four billion, one hundred thirty-five million, three hundred three thousand, two hundred fifteen".