64907758051 has 4 divisors (see below), whose sum is σ = 67729834512. Its totient is φ = 62085681592.

The previous prime is 64907758049. The next prime is 64907758061. The reversal of 64907758051 is 15085770946.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64907758051 - 2¹ = 64907758049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64907758051.

It is not an unprimeable number, because it can be changed into a prime (64907758061) 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, 1411038196 + ... + 1411038241.

It is an arithmetic number, because the mean of its divisors is an integer number (16932458628).

Almost surely, 2^64907758051 is an apocalyptic number.

64907758051 is a deficient number, since it is larger than the sum of its proper divisors (2822076461).

64907758051 is a wasteful number, since it uses less digits than its factorization.

64907758051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822076460.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 64907758051 in words is "sixty-four billion, nine hundred seven million, seven hundred fifty-eight thousand, fifty-one".