64656377307 has 16 divisors (see below), whose sum is σ = 95835127680. Its totient is φ = 43082695656.

The previous prime is 64656377299. The next prime is 64656377347. The reversal of 64656377307 is 70377365646.

64656377307 is a `hidden beast` number, since 6 + 4 + 6 + 563 + 7 + 73 + 0 + 7 = 666.

It is not a de Polignac number, because 64656377307 - 2³ = 64656377299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64656377347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543693 + ... + 651854.

It is an arithmetic number, because the mean of its divisors is an integer number (5989695480).

Almost surely, 2^64656377307 is an apocalyptic number.

64656377307 is a deficient number, since it is larger than the sum of its proper divisors (31178750373).

64656377307 is a wasteful number, since it uses less digits than its factorization.

64656377307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197559 (or 1197553 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 54.

The spelling of 64656377307 in words is "sixty-four billion, six hundred fifty-six million, three hundred seventy-seven thousand, three hundred seven".