13499253967261 has 2 divisors, whose sum is σ = 13499253967262. Its totient is φ = 13499253967260.

The previous prime is 13499253967249. The next prime is 13499253967291. The reversal of 13499253967261 is 16276935299431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9655717243225 + 3843536724036 = 3107365^2 + 1960494^2 .

It is a cyclic number.

It is not a de Polignac number, because 13499253967261 - 2²¹ = 13499251870109 is a prime.

It is a super-2 number, since 2×13499253967261² (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 (13499253967231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6749626983630 + 6749626983631.

It is an arithmetic number, because the mean of its divisors is an integer number (6749626983631).

Almost surely, 2^{13499253967261} is an apocalyptic number.

It is an amenable number.

13499253967261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13499253967261 is an equidigital number, since it uses as much as digits as its factorization.

13499253967261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132269760, while the sum is 67.

The spelling of 13499253967261 in words is "thirteen trillion, four hundred ninety-nine billion, two hundred fifty-three million, nine hundred sixty-seven thousand, two hundred sixty-one".