45345642112212 has 144 divisors (see below), whose sum is σ = 120803014080000. Its totient is φ = 13196089116288.

The previous prime is 45345642112159. The next prime is 45345642112223. The reversal of 45345642112212 is 21221124654354.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22098339 + ... + 24062997.

It is an arithmetic number, because the mean of its divisors is an integer number (838909820000).

Almost surely, 2^{45345642112212} 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 45345642112212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60401507040000).

45345642112212 is an abundant number, since it is smaller than the sum of its proper divisors (75457371967788).

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

45345642112212 is a wasteful number, since it uses less digits than its factorization.

45345642112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965310 (or 1965295 counting only the distinct ones).

The product of its digits is 460800, while the sum is 42.

Adding to 45345642112212 its reverse (21221124654354), we get a palindrome (66566766766566).

The spelling of 45345642112212 in words is "forty-five trillion, three hundred forty-five billion, six hundred forty-two million, one hundred twelve thousand, two hundred twelve".