20356453079 has 2 divisors, whose sum is σ = 20356453080. Its totient is φ = 20356453078.

The previous prime is 20356453027. The next prime is 20356453151. The reversal of 20356453079 is 97035465302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20356453079 - 2¹⁶ = 20356387543 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20356453679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10178226539 + 10178226540.

It is an arithmetic number, because the mean of its divisors is an integer number (10178226540).

Almost surely, 2^20356453079 is an apocalyptic number.

20356453079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20356453079 is an equidigital number, since it uses as much as digits as its factorization.

20356453079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 20356453079 in words is "twenty billion, three hundred fifty-six million, four hundred fifty-three thousand, seventy-nine".