13551423169 has 2 divisors, whose sum is σ = 13551423170. Its totient is φ = 13551423168.

The previous prime is 13551423157. The next prime is 13551423227. The reversal of 13551423169 is 96132415531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13302162225 + 249260944 = 115335^2 + 15788^2 .

It is a cyclic number.

It is not a de Polignac number, because 13551423169 - 2⁹ = 13551422657 is a prime.

It is a super-2 number, since 2×13551423169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13551423569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6775711584 + 6775711585.

It is an arithmetic number, because the mean of its divisors is an integer number (6775711585).

Almost surely, 2^13551423169 is an apocalyptic number.

It is an amenable number.

13551423169 is a deficient number, since it is larger than the sum of its proper divisors (1).

13551423169 is an equidigital number, since it uses as much as digits as its factorization.

13551423169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 40.

The spelling of 13551423169 in words is "thirteen billion, five hundred fifty-one million, four hundred twenty-three thousand, one hundred sixty-nine".