64700056522707 has 4 divisors (see below), whose sum is σ = 86266742030280. Its totient is φ = 43133371015136.

The previous prime is 64700056522681. The next prime is 64700056522711. The reversal of 64700056522707 is 70722565000746.

It is a happy number.

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 64700056522707 - 2³¹ = 64697909039059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64700056522707.

It is not an unprimeable number, because it can be changed into a prime (64700056522747) 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, 10783342753782 + ... + 10783342753787.

It is an arithmetic number, because the mean of its divisors is an integer number (21566685507570).

Almost surely, 2^{64700056522707} is an apocalyptic number.

64700056522707 is a deficient number, since it is larger than the sum of its proper divisors (21566685507573).

64700056522707 is a wasteful number, since it uses less digits than its factorization.

64700056522707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21566685507572.

The product of its (nonzero) digits is 4939200, while the sum is 51.

The spelling of 64700056522707 in words is "sixty-four trillion, seven hundred billion, fifty-six million, five hundred twenty-two thousand, seven hundred seven".