64680026111 has 4 divisors (see below), whose sum is σ = 65776297800. Its totient is φ = 63583754424.

The previous prime is 64680026087. The next prime is 64680026113. The reversal of 64680026111 is 11162008646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11162008646 = 2 ⋅5581004323.

It is a cyclic number.

It is not a de Polignac number, because 64680026111 - 2²² = 64675831807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64680026113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548135756 + ... + 548135873.

It is an arithmetic number, because the mean of its divisors is an integer number (16444074450).

Almost surely, 2^64680026111 is an apocalyptic number.

64680026111 is a deficient number, since it is larger than the sum of its proper divisors (1096271689).

64680026111 is a wasteful number, since it uses less digits than its factorization.

64680026111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096271688.

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 64680026111 in words is "sixty-four billion, six hundred eighty million, twenty-six thousand, one hundred eleven".