64129976927 has 2 divisors, whose sum is σ = 64129976928. Its totient is φ = 64129976926.

The previous prime is 64129976863. The next prime is 64129976969. The reversal of 64129976927 is 72967992146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64129976927 - 2⁶ = 64129976863 is a prime.

It is a super-2 number, since 2×64129976927² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64129976927.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64129976327) 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 as a sum of consecutive naturals, namely, 32064988463 + 32064988464.

It is an arithmetic number, because the mean of its divisors is an integer number (32064988464).

Almost surely, 2^64129976927 is an apocalyptic number.

64129976927 is a deficient number, since it is larger than the sum of its proper divisors (1).

64129976927 is an equidigital number, since it uses as much as digits as its factorization.

64129976927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20575296, while the sum is 62.

The spelling of 64129976927 in words is "sixty-four billion, one hundred twenty-nine million, nine hundred seventy-six thousand, nine hundred twenty-seven".