56505240139 has 2 divisors, whose sum is σ = 56505240140. Its totient is φ = 56505240138.

The previous prime is 56505240089. The next prime is 56505240151. The reversal of 56505240139 is 93104250565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56505240139 - 2¹¹ = 56505238091 is a prime.

It is not a weakly prime, because it can be changed into another prime (56505240839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28252620069 + 28252620070.

It is an arithmetic number, because the mean of its divisors is an integer number (28252620070).

Almost surely, 2^56505240139 is an apocalyptic number.

56505240139 is a deficient number, since it is larger than the sum of its proper divisors (1).

56505240139 is an equidigital number, since it uses as much as digits as its factorization.

56505240139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 56505240139 in words is "fifty-six billion, five hundred five million, two hundred forty thousand, one hundred thirty-nine".