45444540091 has 2 divisors, whose sum is σ = 45444540092. Its totient is φ = 45444540090.

The previous prime is 45444540049. The next prime is 45444540101. The reversal of 45444540091 is 19004544454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45444540091 - 2⁷ = 45444539963 is a prime.

It is not a weakly prime, because it can be changed into another prime (45444540991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22722270045 + 22722270046.

It is an arithmetic number, because the mean of its divisors is an integer number (22722270046).

Almost surely, 2^45444540091 is an apocalyptic number.

45444540091 is a deficient number, since it is larger than the sum of its proper divisors (1).

45444540091 is an equidigital number, since it uses as much as digits as its factorization.

45444540091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 45444540091 in words is "forty-five billion, four hundred forty-four million, five hundred forty thousand, ninety-one".