45098774221 has 4 divisors (see below), whose sum is σ = 45427962492. Its totient is φ = 44769585952.

The previous prime is 45098774179. The next prime is 45098774297. The reversal of 45098774221 is 12247789054.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22180144900 + 22918629321 = 148930^2 + 151389^2 .

It is a cyclic number.

It is not a de Polignac number, because 45098774221 - 2³³ = 36508839629 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45098774521) 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, 164593930 + ... + 164594203.

It is an arithmetic number, because the mean of its divisors is an integer number (11356990623).

Almost surely, 2^45098774221 is an apocalyptic number.

It is an amenable number.

45098774221 is a deficient number, since it is larger than the sum of its proper divisors (329188271).

45098774221 is a wasteful number, since it uses less digits than its factorization.

45098774221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329188270.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 45098774221 in words is "forty-five billion, ninety-eight million, seven hundred seventy-four thousand, two hundred twenty-one".