12432001091 has 2 divisors, whose sum is σ = 12432001092. Its totient is φ = 12432001090.

The previous prime is 12432001081. The next prime is 12432001133. The reversal of 12432001091 is 19010023421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12432001091 - 2⁶ = 12432001027 is a prime.

It is a super-2 number, since 2×12432001091² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12432001061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6216000545 + 6216000546.

It is an arithmetic number, because the mean of its divisors is an integer number (6216000546).

Almost surely, 2^12432001091 is an apocalyptic number.

12432001091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12432001091 is an equidigital number, since it uses as much as digits as its factorization.

12432001091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 12432001091 in words is "twelve billion, four hundred thirty-two million, one thousand, ninety-one".