45104561891 has 4 divisors (see below), whose sum is σ = 47757771432. Its totient is φ = 42451352352.

The previous prime is 45104561869. The next prime is 45104561897. The reversal of 45104561891 is 19816540154.

45104561891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 45104561891 - 2³⁴ = 27924692707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45104561897) 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, 1326604745 + ... + 1326604778.

It is an arithmetic number, because the mean of its divisors is an integer number (11939442858).

Almost surely, 2^45104561891 is an apocalyptic number.

45104561891 is a deficient number, since it is larger than the sum of its proper divisors (2653209541).

45104561891 is a wasteful number, since it uses less digits than its factorization.

45104561891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653209540.

The product of its (nonzero) digits is 172800, while the sum is 44.

The spelling of 45104561891 in words is "forty-five billion, one hundred four million, five hundred sixty-one thousand, eight hundred ninety-one".