20246041979 has 2 divisors, whose sum is σ = 20246041980. Its totient is φ = 20246041978.

The previous prime is 20246041973. The next prime is 20246042017. The reversal of 20246041979 is 97914064202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20246041979 - 2⁸ = 20246041723 is a prime.

It is not a weakly prime, because it can be changed into another prime (20246041973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10123020989 + 10123020990.

It is an arithmetic number, because the mean of its divisors is an integer number (10123020990).

Almost surely, 2^20246041979 is an apocalyptic number.

20246041979 is a deficient number, since it is larger than the sum of its proper divisors (1).

20246041979 is an equidigital number, since it uses as much as digits as its factorization.

20246041979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 20246041979 in words is "twenty billion, two hundred forty-six million, forty-one thousand, nine hundred seventy-nine".