64464254015 has 32 divisors (see below), whose sum is σ = 92622188544. Its totient is φ = 42139595520.

The previous prime is 64464254011. The next prime is 64464254033. The reversal of 64464254015 is 51045246446.

It is not a de Polignac number, because 64464254015 - 2² = 64464254011 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 (64464254011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370694 + ... + 516083.

It is an arithmetic number, because the mean of its divisors is an integer number (2894443392).

Almost surely, 2^64464254015 is an apocalyptic number.

64464254015 is a deficient number, since it is larger than the sum of its proper divisors (28157934529).

64464254015 is a wasteful number, since it uses less digits than its factorization.

64464254015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886887.

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 64464254015 in words is "sixty-four billion, four hundred sixty-four million, two hundred fifty-four thousand, fifteen".