14540440091 has 2 divisors, whose sum is σ = 14540440092. Its totient is φ = 14540440090.

The previous prime is 14540440087. The next prime is 14540440133. The reversal of 14540440091 is 19004404541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 14540440091 - 2² = 14540440087 is a prime.

It is a super-2 number, since 2×14540440091² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14540440021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7270220045 + 7270220046.

It is an arithmetic number, because the mean of its divisors is an integer number (7270220046).

Almost surely, 2^14540440091 is an apocalyptic number.

14540440091 is a deficient number, since it is larger than the sum of its proper divisors (1).

14540440091 is an equidigital number, since it uses as much as digits as its factorization.

14540440091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 14540440091 in words is "fourteen billion, five hundred forty million, four hundred forty thousand, ninety-one".