64064311015 has 4 divisors (see below), whose sum is σ = 76877173224. Its totient is φ = 51251448808.

The previous prime is 64064310983. The next prime is 64064311019. The reversal of 64064311015 is 51011346046.

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 64064311015 - 2⁵ = 64064310983 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 (64064311019) 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, 6406431097 + ... + 6406431106.

It is an arithmetic number, because the mean of its divisors is an integer number (19219293306).

Almost surely, 2^64064311015 is an apocalyptic number.

64064311015 is a deficient number, since it is larger than the sum of its proper divisors (12812862209).

64064311015 is a wasteful number, since it uses less digits than its factorization.

64064311015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12812862208.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 64064311015 in words is "sixty-four billion, sixty-four million, three hundred eleven thousand, fifteen".