64425422879 has 2 divisors, whose sum is σ = 64425422880. Its totient is φ = 64425422878.

The previous prime is 64425422863. The next prime is 64425422891. The reversal of 64425422879 is 97822452446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64425422879 - 2⁴ = 64425422863 is a prime.

It is a super-2 number, since 2×64425422879² (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 64425422879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64425472879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32212711439 + 32212711440.

It is an arithmetic number, because the mean of its divisors is an integer number (32212711440).

Almost surely, 2^64425422879 is an apocalyptic number.

64425422879 is a deficient number, since it is larger than the sum of its proper divisors (1).

64425422879 is an equidigital number, since it uses as much as digits as its factorization.

64425422879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7741440, while the sum is 53.

The spelling of 64425422879 in words is "sixty-four billion, four hundred twenty-five million, four hundred twenty-two thousand, eight hundred seventy-nine".