45321905172 has 96 divisors (see below), whose sum is σ = 110562895744. Its totient is φ = 14435366400.

The previous prime is 45321905159. The next prime is 45321905177. The reversal of 45321905172 is 27150912354.

It is a self number, because there is not a number n which added to its sum of digits gives 45321905172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45321905177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29602047 + ... + 29603577.

Almost surely, 2^45321905172 is an apocalyptic number.

It is an amenable number.

45321905172 is an abundant number, since it is smaller than the sum of its proper divisors (65240990572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45321905172 is a wasteful number, since it uses less digits than its factorization.

45321905172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729 (or 2727 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 45321905172 in words is "forty-five billion, three hundred twenty-one million, nine hundred five thousand, one hundred seventy-two".