49443913728 has 360 divisors, whose sum is σ = 161732669280. Its totient is φ = 14969733120.

The previous prime is 49443913697. The next prime is 49443913793. The reversal of 49443913728 is 82731934494.

49443913728 is a `hidden beast` number, since 49 + 443 + 9 + 137 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43793868 + ... + 43794996.

Almost surely, 2^49443913728 is an apocalyptic number.

49443913728 is a gapful number since it is divisible by the number (48) 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 49443913728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80866334640).

49443913728 is an abundant number, since it is smaller than the sum of its proper divisors (112288755552).

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

49443913728 is an equidigital number, since it uses as much as digits as its factorization.

49443913728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183 (or 1145 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The spelling of 49443913728 in words is "forty-nine billion, four hundred forty-three million, nine hundred thirteen thousand, seven hundred twenty-eight".