45156436221 has 8 divisors (see below), whose sum is σ = 64840011040. Its totient is φ = 27788576112.

The previous prime is 45156436207. The next prime is 45156436249. The reversal of 45156436221 is 12263465154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45156436221 - 2⁵ = 45156436189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1157857339 = 45156436221 / (4 + 5 + 1 + 5 + 6 + 4 + 3 + 6 + 2 + 2 + 1).

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 45156436221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45156436271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578928631 + ... + 578928708.

It is an arithmetic number, because the mean of its divisors is an integer number (8105001380).

Almost surely, 2^45156436221 is an apocalyptic number.

It is an amenable number.

45156436221 is a deficient number, since it is larger than the sum of its proper divisors (19683574819).

45156436221 is a wasteful number, since it uses less digits than its factorization.

45156436221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157857355.

The product of its digits is 172800, while the sum is 39.

The spelling of 45156436221 in words is "forty-five billion, one hundred fifty-six million, four hundred thirty-six thousand, two hundred twenty-one".