64717765883 has 4 divisors (see below), whose sum is σ = 64720906608. Its totient is φ = 64714625160.

The previous prime is 64717765873. The next prime is 64717765897. The reversal of 64717765883 is 38856771746.

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 64717765883 - 2⁴ = 64717765867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64717765823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539248 + ... + 1580733.

It is an arithmetic number, because the mean of its divisors is an integer number (16180226652).

Almost surely, 2^64717765883 is an apocalyptic number.

64717765883 is a deficient number, since it is larger than the sum of its proper divisors (3140725).

64717765883 is a wasteful number, since it uses less digits than its factorization.

64717765883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140724.

The product of its digits is 47416320, while the sum is 62.

The spelling of 64717765883 in words is "sixty-four billion, seven hundred seventeen million, seven hundred sixty-five thousand, eight hundred eighty-three".