43867998720 has 1200 divisors, whose sum is σ = 194000598792. Its totient is φ = 9103933440.

The previous prime is 43867998701. The next prime is 43867998743. The reversal of 43867998720 is 2789976834.

It can be written as a sum of positive squares in 4 ways, for example, as 14388482304 + 29479516416 = 119952^2 + 171696^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 719147490 + ... + 719147550.

Almost surely, 2^43867998720 is an apocalyptic number.

43867998720 is a gapful number since it is divisible by the number (40) 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 43867998720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97000299396).

43867998720 is an abundant number, since it is smaller than the sum of its proper divisors (150132600072).

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

43867998720 is an equidigital number, since it uses as much as digits as its factorization.

43867998720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 43867998720 in words is "forty-three billion, eight hundred sixty-seven million, nine hundred ninety-eight thousand, seven hundred twenty".