13243091619991 has 2 divisors, whose sum is σ = 13243091619992. Its totient is φ = 13243091619990.

The previous prime is 13243091619973. The next prime is 13243091620067. The reversal of 13243091619991 is 19991619034231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13243091619991 - 2¹⁵ = 13243091587223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13243091619931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6621545809995 + 6621545809996.

It is an arithmetic number, because the mean of its divisors is an integer number (6621545809996).

Almost surely, 2^{13243091619991} is an apocalyptic number.

13243091619991 is a deficient number, since it is larger than the sum of its proper divisors (1).

13243091619991 is an equidigital number, since it uses as much as digits as its factorization.

13243091619991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2834352, while the sum is 58.

The spelling of 13243091619991 in words is "thirteen trillion, two hundred forty-three billion, ninety-one million, six hundred nineteen thousand, nine hundred ninety-one".