13293820691 has 2 divisors, whose sum is σ = 13293820692. Its totient is φ = 13293820690.

The previous prime is 13293820637. The next prime is 13293820711. The reversal of 13293820691 is 19602839231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13293820691 - 2⁶ = 13293820627 is a prime.

It is not a weakly prime, because it can be changed into another prime (13293840691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6646910345 + 6646910346.

It is an arithmetic number, because the mean of its divisors is an integer number (6646910346).

Almost surely, 2^13293820691 is an apocalyptic number.

13293820691 is a deficient number, since it is larger than the sum of its proper divisors (1).

13293820691 is an equidigital number, since it uses as much as digits as its factorization.

13293820691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 13293820691 in words is "thirteen billion, two hundred ninety-three million, eight hundred twenty thousand, six hundred ninety-one".