64663410511 has 12 divisors (see below), whose sum is σ = 75543550992. Its totient is φ = 55187891808.

The previous prime is 64663410509. The next prime is 64663410521. The reversal of 64663410511 is 11501436646.

It is not a de Polignac number, because 64663410511 - 2¹ = 64663410509 is a prime.

It is a super-2 number, since 2×64663410511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64663410521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2820475 + ... + 2843308.

It is an arithmetic number, because the mean of its divisors is an integer number (6295295916).

Almost surely, 2^64663410511 is an apocalyptic number.

64663410511 is a deficient number, since it is larger than the sum of its proper divisors (10880140481).

64663410511 is a wasteful number, since it uses less digits than its factorization.

64663410511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5664030 (or 5664023 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 64663410511 in words is "sixty-four billion, six hundred sixty-three million, four hundred ten thousand, five hundred eleven".