64516465731 has 8 divisors (see below), whose sum is σ = 88346872144. Its totient is φ = 41848518240.

The previous prime is 64516465693. The next prime is 64516465747. The reversal of 64516465731 is 13756461546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64516465731 - 2⁶ = 64516465667 is a prime.

It is a super-2 number, since 2×64516465731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64516465831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290614600 + ... + 290614821.

It is an arithmetic number, because the mean of its divisors is an integer number (11043359018).

Almost surely, 2^64516465731 is an apocalyptic number.

64516465731 is a deficient number, since it is larger than the sum of its proper divisors (23830406413).

64516465731 is a wasteful number, since it uses less digits than its factorization.

64516465731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581229461.

The product of its digits is 1814400, while the sum is 48.

The spelling of 64516465731 in words is "sixty-four billion, five hundred sixteen million, four hundred sixty-five thousand, seven hundred thirty-one".