45145422120 has 128 divisors (see below), whose sum is σ = 143261395200. Its totient is φ = 11357558784.

The previous prime is 45145422103. The next prime is 45145422191. The reversal of 45145422120 is 2122454154.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89446 + ... + 313514.

It is an arithmetic number, because the mean of its divisors is an integer number (1119229650).

Almost surely, 2^45145422120 is an apocalyptic number.

45145422120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45145422120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71630697600).

45145422120 is an abundant number, since it is smaller than the sum of its proper divisors (98115973080).

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

45145422120 is a wasteful number, since it uses less digits than its factorization.

45145422120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224179 (or 224175 counting only the distinct ones).

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

Adding to 45145422120 its reverse (2122454154), we get a palindrome (47267876274).

The spelling of 45145422120 in words is "forty-five billion, one hundred forty-five million, four hundred twenty-two thousand, one hundred twenty".