426660616939 has 2 divisors, whose sum is σ = 426660616940. Its totient is φ = 426660616938.

The previous prime is 426660616883. The next prime is 426660616957. The reversal of 426660616939 is 939616066624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 426660616939 - 2¹⁵ = 426660584171 is a prime.

It is not a weakly prime, because it can be changed into another prime (426660646939) 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, 213330308469 + 213330308470.

It is an arithmetic number, because the mean of its divisors is an integer number (213330308470).

Almost surely, 2^426660616939 is an apocalyptic number.

426660616939 is a deficient number, since it is larger than the sum of its proper divisors (1).

426660616939 is an equidigital number, since it uses as much as digits as its factorization.

426660616939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15116544, while the sum is 58.

The spelling of 426660616939 in words is "four hundred twenty-six billion, six hundred sixty million, six hundred sixteen thousand, nine hundred thirty-nine".