64867425915 has 16 divisors (see below), whose sum is σ = 104182518528. Its totient is φ = 34464414816.

The previous prime is 64867425913. The next prime is 64867425943. The reversal of 64867425915 is 51952476846.

It is not a de Polignac number, because 64867425915 - 2¹ = 64867425913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64867425913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8217529 + ... + 8225418.

It is an arithmetic number, because the mean of its divisors is an integer number (6511407408).

Almost surely, 2^64867425915 is an apocalyptic number.

64867425915 is a deficient number, since it is larger than the sum of its proper divisors (39315092613).

64867425915 is a wasteful number, since it uses less digits than its factorization.

64867425915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16443218.

The product of its digits is 14515200, while the sum is 57.

The spelling of 64867425915 in words is "sixty-four billion, eight hundred sixty-seven million, four hundred twenty-five thousand, nine hundred fifteen".