64664607051 has 48 divisors (see below), whose sum is σ = 103727070720. Its totient is φ = 38487658560.

The previous prime is 64664607031. The next prime is 64664607061. The reversal of 64664607051 is 15070646646.

64664607051 is a `hidden beast` number, since 64 + 66 + 460 + 70 + 5 + 1 = 666.

It is not a de Polignac number, because 64664607051 - 2¹¹ = 64664605003 is a prime.

It is a super-2 number, since 2×64664607051² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64664606988 and 64664607006.

It is not an unprimeable number, because it can be changed into a prime (64664607031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6437605 + ... + 6447641.

It is an arithmetic number, because the mean of its divisors is an integer number (2160980640).

Almost surely, 2^64664607051 is an apocalyptic number.

64664607051 is a deficient number, since it is larger than the sum of its proper divisors (39062463669).

64664607051 is a wasteful number, since it uses less digits than its factorization.

64664607051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11216 (or 11213 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 64664607051 in words is "sixty-four billion, six hundred sixty-four million, six hundred seven thousand, fifty-one".