64013835321 has 12 divisors (see below), whose sum is σ = 92721994560. Its totient is φ = 42557013720.

The previous prime is 64013835317. The next prime is 64013835323. The reversal of 64013835321 is 12353831046.

64013835321 is a `hidden beast` number, since 6 + 40 + 1 + 3 + 83 + 532 + 1 = 666.

It is not a de Polignac number, because 64013835321 - 2² = 64013835317 is a prime.

It is a super-2 number, since 2×64013835321² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64013835323) 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, 9902965 + ... + 9909426.

It is an arithmetic number, because the mean of its divisors is an integer number (7726832880).

Almost surely, 2^64013835321 is an apocalyptic number.

It is an amenable number.

64013835321 is a deficient number, since it is larger than the sum of its proper divisors (28708159239).

64013835321 is a wasteful number, since it uses less digits than its factorization.

64013835321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19812756 (or 19812753 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 64013835321 in words is "sixty-four billion, thirteen million, eight hundred thirty-five thousand, three hundred twenty-one".