13481640091 has 2 divisors, whose sum is σ = 13481640092. Its totient is φ = 13481640090.

The previous prime is 13481640043. The next prime is 13481640143. The reversal of 13481640091 is 19004618431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13481640091 - 2⁹ = 13481639579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13481640091.

It is not a weakly prime, because it can be changed into another prime (13481640191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6740820045 + 6740820046.

It is an arithmetic number, because the mean of its divisors is an integer number (6740820046).

Almost surely, 2^13481640091 is an apocalyptic number.

13481640091 is a deficient number, since it is larger than the sum of its proper divisors (1).

13481640091 is an equidigital number, since it uses as much as digits as its factorization.

13481640091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 13481640091 in words is "thirteen billion, four hundred eighty-one million, six hundred forty thousand, ninety-one".