13261790668447 has 2 divisors, whose sum is σ = 13261790668448. Its totient is φ = 13261790668446.

The previous prime is 13261790668369. The next prime is 13261790668523. The reversal of 13261790668447 is 74486609716231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13261790668447 - 2⁷ = 13261790668319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13261790668547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6630895334223 + 6630895334224.

It is an arithmetic number, because the mean of its divisors is an integer number (6630895334224).

Almost surely, 2^{13261790668447} is an apocalyptic number.

13261790668447 is a deficient number, since it is larger than the sum of its proper divisors (1).

13261790668447 is an equidigital number, since it uses as much as digits as its factorization.

13261790668447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73156608, while the sum is 64.

The spelling of 13261790668447 in words is "thirteen trillion, two hundred sixty-one billion, seven hundred ninety million, six hundred sixty-eight thousand, four hundred forty-seven".