45444531136 has 56 divisors (see below), whose sum is σ = 91285903280. Its totient is φ = 22444646400.

The previous prime is 45444531131. The next prime is 45444531157. The reversal of 45444531136 is 63113544454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45444531131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2299216 + ... + 2318896.

Almost surely, 2^45444531136 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 45444531136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45642951640).

45444531136 is an abundant number, since it is smaller than the sum of its proper divisors (45841372144).

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

45444531136 is a wasteful number, since it uses less digits than its factorization.

45444531136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20133 (or 20123 counting only the distinct ones).

The product of its digits is 345600, while the sum is 40.

The spelling of 45444531136 in words is "forty-five billion, four hundred forty-four million, five hundred thirty-one thousand, one hundred thirty-six".