64817267613 has 16 divisors (see below), whose sum is σ = 98919068160. Its totient is φ = 36982226736.

The previous prime is 64817267551. The next prime is 64817267623. The reversal of 64817267613 is 31676271846.

It is a happy number.

It is not a de Polignac number, because 64817267613 - 2²⁴ = 64800490397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64817267623) 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, 2327995 + ... + 2355672.

It is an arithmetic number, because the mean of its divisors is an integer number (6182441760).

Almost surely, 2^64817267613 is an apocalyptic number.

It is an amenable number.

64817267613 is a deficient number, since it is larger than the sum of its proper divisors (34101800547).

64817267613 is a wasteful number, since it uses less digits than its factorization.

64817267613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4684336.

The product of its digits is 2032128, while the sum is 51.

The spelling of 64817267613 in words is "sixty-four billion, eight hundred seventeen million, two hundred sixty-seven thousand, six hundred thirteen".