13489920571 has 2 divisors, whose sum is σ = 13489920572. Its totient is φ = 13489920570.

The previous prime is 13489920553. The next prime is 13489920581. The reversal of 13489920571 is 17502998431.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13489920571 - 2⁷ = 13489920443 is a prime.

It is not a weakly prime, because it can be changed into another prime (13489920541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6744960285 + 6744960286.

It is an arithmetic number, because the mean of its divisors is an integer number (6744960286).

Almost surely, 2^13489920571 is an apocalyptic number.

13489920571 is a deficient number, since it is larger than the sum of its proper divisors (1).

13489920571 is an equidigital number, since it uses as much as digits as its factorization.

13489920571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 13489920571 in words is "thirteen billion, four hundred eighty-nine million, nine hundred twenty thousand, five hundred seventy-one".