65012421079 has 2 divisors, whose sum is σ = 65012421080. Its totient is φ = 65012421078.

The previous prime is 65012421007. The next prime is 65012421101. The reversal of 65012421079 is 97012421056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65012421079 - 2²⁵ = 64978866647 is a prime.

It is a super-2 number, since 2×65012421079² (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 (65012421779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32506210539 + 32506210540.

It is an arithmetic number, because the mean of its divisors is an integer number (32506210540).

Almost surely, 2^65012421079 is an apocalyptic number.

65012421079 is a deficient number, since it is larger than the sum of its proper divisors (1).

65012421079 is an equidigital number, since it uses as much as digits as its factorization.

65012421079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 65012421079 in words is "sixty-five billion, twelve million, four hundred twenty-one thousand, seventy-nine".