64654511039 has 4 divisors (see below), whose sum is σ = 64656483456. Its totient is φ = 64652538624.

The previous prime is 64654510957. The next prime is 64654511041. The reversal of 64654511039 is 93011545646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64654511039 - 2²⁰ = 64653462463 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 (64654511099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 936194 + ... + 1002879.

It is an arithmetic number, because the mean of its divisors is an integer number (16164120864).

Almost surely, 2^64654511039 is an apocalyptic number.

64654511039 is a deficient number, since it is larger than the sum of its proper divisors (1972417).

64654511039 is a wasteful number, since it uses less digits than its factorization.

64654511039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972416.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 64654511039 in words is "sixty-four billion, six hundred fifty-four million, five hundred eleven thousand, thirty-nine".