64763898679 has 4 divisors (see below), whose sum is σ = 64788039976. Its totient is φ = 64739757384.

The previous prime is 64763898659. The next prime is 64763898707. The reversal of 64763898679 is 97689836746.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64763898679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64763898659) 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, 12066624 + ... + 12071989.

It is an arithmetic number, because the mean of its divisors is an integer number (16197009994).

Almost surely, 2^64763898679 is an apocalyptic number.

64763898679 is a deficient number, since it is larger than the sum of its proper divisors (24141297).

64763898679 is a wasteful number, since it uses less digits than its factorization.

64763898679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24141296.

The product of its digits is 658409472, while the sum is 73.

The spelling of 64763898679 in words is "sixty-four billion, seven hundred sixty-three million, eight hundred ninety-eight thousand, six hundred seventy-nine".