20057488279 has 2 divisors, whose sum is σ = 20057488280. Its totient is φ = 20057488278.

The previous prime is 20057488273. The next prime is 20057488289. The reversal of 20057488279 is 97288475002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20057488279 - 2⁹ = 20057487767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20057488273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10028744139 + 10028744140.

It is an arithmetic number, because the mean of its divisors is an integer number (10028744140).

Almost surely, 2^20057488279 is an apocalyptic number.

20057488279 is a deficient number, since it is larger than the sum of its proper divisors (1).

20057488279 is an equidigital number, since it uses as much as digits as its factorization.

20057488279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 20057488279 in words is "twenty billion, fifty-seven million, four hundred eighty-eight thousand, two hundred seventy-nine".