12503939473 has 2 divisors, whose sum is σ = 12503939474. Its totient is φ = 12503939472.

The previous prime is 12503939449. The next prime is 12503939479. The reversal of 12503939473 is 37493930521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12147787089 + 356152384 = 110217^2 + 18872^2 .

It is a cyclic number.

It is not a de Polignac number, because 12503939473 - 2³³ = 3914004881 is a prime.

It is not a weakly prime, because it can be changed into another prime (12503939479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6251969736 + 6251969737.

It is an arithmetic number, because the mean of its divisors is an integer number (6251969737).

Almost surely, 2^12503939473 is an apocalyptic number.

It is an amenable number.

12503939473 is a deficient number, since it is larger than the sum of its proper divisors (1).

12503939473 is an equidigital number, since it uses as much as digits as its factorization.

12503939473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 46.

The spelling of 12503939473 in words is "twelve billion, five hundred three million, nine hundred thirty-nine thousand, four hundred seventy-three".