64129976863 has 2 divisors, whose sum is σ = 64129976864. Its totient is φ = 64129976862.

The previous prime is 64129976773. The next prime is 64129976927. The reversal of 64129976863 is 36867992146.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64129976863 is a prime.

It is a super-2 number, since 2×64129976863² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64129976263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32064988431 + 32064988432.

It is an arithmetic number, because the mean of its divisors is an integer number (32064988432).

Almost surely, 2^64129976863 is an apocalyptic number.

64129976863 is a deficient number, since it is larger than the sum of its proper divisors (1).

64129976863 is an equidigital number, since it uses as much as digits as its factorization.

64129976863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23514624, while the sum is 61.

The spelling of 64129976863 in words is "sixty-four billion, one hundred twenty-nine million, nine hundred seventy-six thousand, eight hundred sixty-three".