445430232091 has 4 divisors (see below), whose sum is σ = 479694096112. Its totient is φ = 411166368072.

The previous prime is 445430232089. The next prime is 445430232097. The reversal of 445430232091 is 190232034544.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 445430232091 - 2¹ = 445430232089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 445430232091.

It is not an unprimeable number, because it can be changed into a prime (445430232097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17131931991 + ... + 17131932016.

It is an arithmetic number, because the mean of its divisors is an integer number (119923524028).

Almost surely, 2^445430232091 is an apocalyptic number.

445430232091 is a deficient number, since it is larger than the sum of its proper divisors (34263864021).

445430232091 is a wasteful number, since it uses less digits than its factorization.

445430232091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34263864020.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 445430232091 in words is "four hundred forty-five billion, four hundred thirty million, two hundred thirty-two thousand, ninety-one".