45751321784 has 72 divisors (see below), whose sum is σ = 99369962280. Its totient is φ = 19344974400.

The previous prime is 45751321753. The next prime is 45751321789. The reversal of 45751321784 is 48712315754.

It is a super-2 number, since 2×45751321784² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45751321789) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 161665307 + ... + 161665589.

It is an arithmetic number, because the mean of its divisors is an integer number (1380138365).

Almost surely, 2^45751321784 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 45751321784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49684981140).

45751321784 is an abundant number, since it is smaller than the sum of its proper divisors (53618640496).

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

45751321784 is an equidigital number, since it uses as much as digits as its factorization.

45751321784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 393 counting only the distinct ones).

The product of its digits is 940800, while the sum is 47.

The spelling of 45751321784 in words is "forty-five billion, seven hundred fifty-one million, three hundred twenty-one thousand, seven hundred eighty-four".