13320091531601 has 2 divisors, whose sum is σ = 13320091531602. Its totient is φ = 13320091531600.

The previous prime is 13320091531511. The next prime is 13320091531633. The reversal of 13320091531601 is 10613519002331.

13320091531601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13318113061201 + 1978470400 = 3649399^2 + 44480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13320091531601 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13320091537601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660045765800 + 6660045765801.

It is an arithmetic number, because the mean of its divisors is an integer number (6660045765801).

Almost surely, 2^{13320091531601} is an apocalyptic number.

It is an amenable number.

13320091531601 is a deficient number, since it is larger than the sum of its proper divisors (1).

13320091531601 is an equidigital number, since it uses as much as digits as its factorization.

13320091531601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The spelling of 13320091531601 in words is "thirteen trillion, three hundred twenty billion, ninety-one million, five hundred thirty-one thousand, six hundred one".