45612172420 has 12 divisors (see below), whose sum is σ = 95785562124. Its totient is φ = 18244868960.

The previous prime is 45612172381. The next prime is 45612172421. The reversal of 45612172420 is 2427121654.

It can be written as a sum of positive squares in 2 ways, for example, as 35918588484 + 9693583936 = 189522^2 + 98456^2 .

It is not an unprimeable number, because it can be changed into a prime (45612172421) 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, 1140304291 + ... + 1140304330.

It is an arithmetic number, because the mean of its divisors is an integer number (7982130177).

Almost surely, 2^45612172420 is an apocalyptic number.

It is an amenable number.

45612172420 is an abundant number, since it is smaller than the sum of its proper divisors (50173389704).

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

45612172420 is a wasteful number, since it uses less digits than its factorization.

45612172420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280608630 (or 2280608628 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 45612172420 in words is "forty-five billion, six hundred twelve million, one hundred seventy-two thousand, four hundred twenty".