20460339979 has 2 divisors, whose sum is σ = 20460339980. Its totient is φ = 20460339978.

The previous prime is 20460339971. The next prime is 20460340037. The reversal of 20460339979 is 97993306402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20460339979 - 2³ = 20460339971 is a prime.

It is not a weakly prime, because it can be changed into another prime (20460339971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10230169989 + 10230169990.

It is an arithmetic number, because the mean of its divisors is an integer number (10230169990).

Almost surely, 2^20460339979 is an apocalyptic number.

20460339979 is a deficient number, since it is larger than the sum of its proper divisors (1).

20460339979 is an equidigital number, since it uses as much as digits as its factorization.

20460339979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2204496, while the sum is 52.

The spelling of 20460339979 in words is "twenty billion, four hundred sixty million, three hundred thirty-nine thousand, nine hundred seventy-nine".