20574984799 has 2 divisors, whose sum is σ = 20574984800. Its totient is φ = 20574984798.

The previous prime is 20574984733. The next prime is 20574984809. The reversal of 20574984799 is 99748947502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20574984799 - 2²⁵ = 20541430367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20574984799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20574984709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10287492399 + 10287492400.

It is an arithmetic number, because the mean of its divisors is an integer number (10287492400).

Almost surely, 2^20574984799 is an apocalyptic number.

20574984799 is a deficient number, since it is larger than the sum of its proper divisors (1).

20574984799 is an equidigital number, since it uses as much as digits as its factorization.

20574984799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45722880, while the sum is 64.

The spelling of 20574984799 in words is "twenty billion, five hundred seventy-four million, nine hundred eighty-four thousand, seven hundred ninety-nine".