13905245797 has 2 divisors, whose sum is σ = 13905245798. Its totient is φ = 13905245796.

The previous prime is 13905245777. The next prime is 13905245807. The reversal of 13905245797 is 79754250931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9846791361 + 4058454436 = 99231^2 + 63706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13905245797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13905245707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6952622898 + 6952622899.

It is an arithmetic number, because the mean of its divisors is an integer number (6952622899).

Almost surely, 2^13905245797 is an apocalyptic number.

It is an amenable number.

13905245797 is a deficient number, since it is larger than the sum of its proper divisors (1).

13905245797 is an equidigital number, since it uses as much as digits as its factorization.

13905245797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2381400, while the sum is 52.

The spelling of 13905245797 in words is "thirteen billion, nine hundred five million, two hundred forty-five thousand, seven hundred ninety-seven".