64297917679 has 2 divisors, whose sum is σ = 64297917680. Its totient is φ = 64297917678.

The previous prime is 64297917653. The next prime is 64297917709. The reversal of 64297917679 is 97671979246.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64297917679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64297917379) 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, 32148958839 + 32148958840.

It is an arithmetic number, because the mean of its divisors is an integer number (32148958840).

Almost surely, 2^64297917679 is an apocalyptic number.

64297917679 is a deficient number, since it is larger than the sum of its proper divisors (1).

64297917679 is an equidigital number, since it uses as much as digits as its factorization.

64297917679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72013536, while the sum is 67.

The spelling of 64297917679 in words is "sixty-four billion, two hundred ninety-seven million, nine hundred seventeen thousand, six hundred seventy-nine".