64680266208645 has 112 divisors (see below), whose sum is σ = 123224248562112. Its totient is φ = 32464944944640.

The previous prime is 64680266208637. The next prime is 64680266208653. The reversal of 64680266208645 is 54680266208646.

It is an interprime number because it is at equal distance from previous prime (64680266208637) and next prime (64680266208653).

It is not a de Polignac number, because 64680266208645 - 2³ = 64680266208637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1906212330 + ... + 1906246260.

Almost surely, 2^{64680266208645} is an apocalyptic number.

It is an amenable number.

64680266208645 is a deficient number, since it is larger than the sum of its proper divisors (58543982353467).

64680266208645 is a wasteful number, since it uses less digits than its factorization.

64680266208645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64734 (or 64719 counting only the distinct ones).

The product of its (nonzero) digits is 159252480, while the sum is 63.

Subtracting from 64680266208645 its reverse (54680266208646), we obtain a palindrome (9999999999999).

The spelling of 64680266208645 in words is "sixty-four trillion, six hundred eighty billion, two hundred sixty-six million, two hundred eight thousand, six hundred forty-five".