56503939439 has 2 divisors, whose sum is σ = 56503939440. Its totient is φ = 56503939438.

The previous prime is 56503939433. The next prime is 56503939477. The reversal of 56503939439 is 93493930565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56503939439 - 2³² = 52208972143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56503939433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28251969719 + 28251969720.

It is an arithmetic number, because the mean of its divisors is an integer number (28251969720).

Almost surely, 2^56503939439 is an apocalyptic number.

56503939439 is a deficient number, since it is larger than the sum of its proper divisors (1).

56503939439 is an equidigital number, since it uses as much as digits as its factorization.

56503939439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11809800, while the sum is 56.

The spelling of 56503939439 in words is "fifty-six billion, five hundred three million, nine hundred thirty-nine thousand, four hundred thirty-nine".