43996547820 has 96 divisors (see below), whose sum is σ = 130326336000. Its totient is φ = 11059006464.

The previous prime is 43996547813. The next prime is 43996547821. The reversal of 43996547820 is 2874569934.

43996547820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (43996547821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129892 + ... + 323828.

It is an arithmetic number, because the mean of its divisors is an integer number (1357566000).

Almost surely, 2^43996547820 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 43996547820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65163168000).

43996547820 is an abundant number, since it is smaller than the sum of its proper divisors (86329788180).

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

43996547820 is a wasteful number, since it uses less digits than its factorization.

43996547820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194167 (or 194165 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 43996547820 in words is "forty-three billion, nine hundred ninety-six million, five hundred forty-seven thousand, eight hundred twenty".