20392560493 has 2 divisors, whose sum is σ = 20392560494. Its totient is φ = 20392560492.

The previous prime is 20392560491. The next prime is 20392560533. The reversal of 20392560493 is 39406529302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13292475849 + 7100084644 = 115293^2 + 84262^2 .

It is a cyclic number.

It is not a de Polignac number, because 20392560493 - 2¹ = 20392560491 is a prime.

Together with 20392560491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20392560491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10196280246 + 10196280247.

It is an arithmetic number, because the mean of its divisors is an integer number (10196280247).

Almost surely, 2^20392560493 is an apocalyptic number.

It is an amenable number.

20392560493 is a deficient number, since it is larger than the sum of its proper divisors (1).

20392560493 is an equidigital number, since it uses as much as digits as its factorization.

20392560493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 20392560493 in words is "twenty billion, three hundred ninety-two million, five hundred sixty thousand, four hundred ninety-three".