45545459591 has 4 divisors (see below), whose sum is σ = 46094200152. Its totient is φ = 44996719032.

The previous prime is 45545459587. The next prime is 45545459599. The reversal of 45545459591 is 19595454554.

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 45545459591 - 2² = 45545459587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45545459599) 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 in 3 ways as a sum of consecutive naturals, for example, 274370156 + ... + 274370321.

It is an arithmetic number, because the mean of its divisors is an integer number (11523550038).

Almost surely, 2^45545459591 is an apocalyptic number.

45545459591 is a deficient number, since it is larger than the sum of its proper divisors (548740561).

45545459591 is an equidigital number, since it uses as much as digits as its factorization.

45545459591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548740560.

The product of its digits is 16200000, while the sum is 56.

The spelling of 45545459591 in words is "forty-five billion, five hundred forty-five million, four hundred fifty-nine thousand, five hundred ninety-one".