45144243440 has 20 divisors (see below), whose sum is σ = 104960366184. Its totient is φ = 18057697344.

The previous prime is 45144243433. The next prime is 45144243449. The reversal of 45144243440 is 4434244154.

45144243440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 45144243440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45144243449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282151442 + ... + 282151601.

Almost surely, 2^45144243440 is an apocalyptic number.

45144243440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45144243440 is an abundant number, since it is smaller than the sum of its proper divisors (59816122744).

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

45144243440 is a wasteful number, since it uses less digits than its factorization.

45144243440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564303056 (or 564303050 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 45144243440 its reverse (4434244154), we get a palindrome (49578487594).

The spelling of 45144243440 in words is "forty-five billion, one hundred forty-four million, two hundred forty-three thousand, four hundred forty".