13387485121 has 2 divisors, whose sum is σ = 13387485122. Its totient is φ = 13387485120.

The previous prime is 13387485073. The next prime is 13387485131. The reversal of 13387485121 is 12158478331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13371684496 + 15800625 = 115636^2 + 3975^2 .

It is a cyclic number.

It is not a de Polignac number, because 13387485121 - 2¹³ = 13387476929 is a prime.

It is not a weakly prime, because it can be changed into another prime (13387485131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6693742560 + 6693742561.

It is an arithmetic number, because the mean of its divisors is an integer number (6693742561).

Almost surely, 2^13387485121 is an apocalyptic number.

It is an amenable number.

13387485121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13387485121 is an equidigital number, since it uses as much as digits as its factorization.

13387485121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The spelling of 13387485121 in words is "thirteen billion, three hundred eighty-seven million, four hundred eighty-five thousand, one hundred twenty-one".