45212544021 has 12 divisors (see below), whose sum is σ = 64038068192. Its totient is φ = 28368654528.

The previous prime is 45212543983. The next prime is 45212544079. The reversal of 45212544021 is 12044521254.

It is not a de Polignac number, because 45212544021 - 2¹³ = 45212535829 is a prime.

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 45212544021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45212544121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26073265 + ... + 26074998.

Almost surely, 2^45212544021 is an apocalyptic number.

It is an amenable number.

45212544021 is a deficient number, since it is larger than the sum of its proper divisors (18825524171).

45212544021 is a wasteful number, since it uses less digits than its factorization.

45212544021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52148300 (or 52148283 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The spelling of 45212544021 in words is "forty-five billion, two hundred twelve million, five hundred forty-four thousand, twenty-one".