45212421228 has 96 divisors (see below), whose sum is σ = 115498252800. Its totient is φ = 13681488384.

The previous prime is 45212421227. The next prime is 45212421239. The reversal of 45212421228 is 82212421254.

It is not an unprimeable number, because it can be changed into a prime (45212421227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4082763 + ... + 4093821.

It is an arithmetic number, because the mean of its divisors is an integer number (1203106800).

Almost surely, 2^45212421228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45212421228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57749126400).

45212421228 is an abundant number, since it is smaller than the sum of its proper divisors (70285831572).

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

45212421228 is a wasteful number, since it uses less digits than its factorization.

45212421228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11511 (or 11509 counting only the distinct ones).

The product of its digits is 20480, while the sum is 33.

The spelling of 45212421228 in words is "forty-five billion, two hundred twelve million, four hundred twenty-one thousand, two hundred twenty-eight".