13091915226989 has 2 divisors, whose sum is σ = 13091915226990. Its totient is φ = 13091915226988.

The previous prime is 13091915226911. The next prime is 13091915227019. The reversal of 13091915226989 is 98962251919031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8871212057764 + 4220703169225 = 2978458^2 + 2054435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13091915226989 is a prime.

It is a super-2 number, since 2×13091915226989² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13091915226889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6545957613494 + 6545957613495.

It is an arithmetic number, because the mean of its divisors is an integer number (6545957613495).

Almost surely, 2^{13091915226989} is an apocalyptic number.

It is an amenable number.

13091915226989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13091915226989 is an equidigital number, since it uses as much as digits as its factorization.

13091915226989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18895680, while the sum is 65.

The spelling of 13091915226989 in words is "thirteen trillion, ninety-one billion, nine hundred fifteen million, two hundred twenty-six thousand, nine hundred eighty-nine".