13551423569 has 2 divisors, whose sum is σ = 13551423570. Its totient is φ = 13551423568.

The previous prime is 13551423559. The next prime is 13551423617. The reversal of 13551423569 is 96532415531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10264121344 + 3287302225 = 101312^2 + 57335^2 .

It is a cyclic number.

It is not a de Polignac number, because 13551423569 - 2⁸ = 13551423313 is a prime.

It is a super-2 number, since 2×13551423569² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13551423539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6775711784 + 6775711785.

It is an arithmetic number, because the mean of its divisors is an integer number (6775711785).

Almost surely, 2^13551423569 is an apocalyptic number.

It is an amenable number.

13551423569 is a deficient number, since it is larger than the sum of its proper divisors (1).

13551423569 is an equidigital number, since it uses as much as digits as its factorization.

13551423569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486000, while the sum is 44.

The spelling of 13551423569 in words is "thirteen billion, five hundred fifty-one million, four hundred twenty-three thousand, five hundred sixty-nine".