64515133662 has 32 divisors (see below), whose sum is σ = 149880597504. Its totient is φ = 18130716000.

The previous prime is 64515133643. The next prime is 64515133667. The reversal of 64515133662 is 26633151546.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64515133667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12588214 + ... + 12593337.

It is an arithmetic number, because the mean of its divisors is an integer number (4683768672).

Almost surely, 2^64515133662 is an apocalyptic number.

64515133662 is an abundant number, since it is smaller than the sum of its proper divisors (85365463842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64515133662 is a wasteful number, since it uses less digits than its factorization.

64515133662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25181624.

The product of its digits is 388800, while the sum is 42.

The spelling of 64515133662 in words is "sixty-four billion, five hundred fifteen million, one hundred thirty-three thousand, six hundred sixty-two".