13581928417 has 2 divisors, whose sum is σ = 13581928418. Its totient is φ = 13581928416.

The previous prime is 13581928391. The next prime is 13581928429. The reversal of 13581928417 is 71482918531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11603813841 + 1978114576 = 107721^2 + 44476^2 .

It is a cyclic number.

It is not a de Polignac number, because 13581928417 - 2²³ = 13573539809 is a prime.

It is not a weakly prime, because it can be changed into another prime (13581928117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6790964208 + 6790964209.

It is an arithmetic number, because the mean of its divisors is an integer number (6790964209).

Almost surely, 2^13581928417 is an apocalyptic number.

It is an amenable number.

13581928417 is a deficient number, since it is larger than the sum of its proper divisors (1).

13581928417 is an equidigital number, since it uses as much as digits as its factorization.

13581928417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 49.

The spelling of 13581928417 in words is "thirteen billion, five hundred eighty-one million, nine hundred twenty-eight thousand, four hundred seventeen".