65364872491815 has 32 divisors (see below), whose sum is σ = 117525603525120. Its totient is φ = 30780515204736.

The previous prime is 65364872491783. The next prime is 65364872491913. The reversal of 65364872491815 is 51819427846356.

It is not a de Polignac number, because 65364872491815 - 2⁵ = 65364872491783 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a self number, because there is not a number n which added to its sum of digits gives 65364872491815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7287049305 + ... + 7287058274.

It is an arithmetic number, because the mean of its divisors is an integer number (3672675110160).

Almost surely, 2^{65364872491815} is an apocalyptic number.

65364872491815 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65364872491815 is a deficient number, since it is larger than the sum of its proper divisors (52160731033305).

65364872491815 is a wasteful number, since it uses less digits than its factorization.

65364872491815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14574107623.

The product of its digits is 348364800, while the sum is 69.

The spelling of 65364872491815 in words is "sixty-five trillion, three hundred sixty-four billion, eight hundred seventy-two million, four hundred ninety-one thousand, eight hundred fifteen".