64515273304736 has 48 divisors (see below), whose sum is σ = 127526143741920. Its totient is φ = 32127842822400.

The previous prime is 64515273304717. The next prime is 64515273304739. The reversal of 64515273304736 is 63740337251546.

It is not an unprimeable number, because it can be changed into a prime (64515273304739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10257155 + ... + 15304893.

It is an arithmetic number, because the mean of its divisors is an integer number (2656794661290).

Almost surely, 2^{64515273304736} is an apocalyptic number.

It is an amenable number.

64515273304736 is a deficient number, since it is larger than the sum of its proper divisors (63010870437184).

64515273304736 is a wasteful number, since it uses less digits than its factorization.

64515273304736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5049357 (or 5049349 counting only the distinct ones).

The product of its (nonzero) digits is 38102400, while the sum is 56.

The spelling of 64515273304736 in words is "sixty-four trillion, five hundred fifteen billion, two hundred seventy-three million, three hundred four thousand, seven hundred thirty-six".