43799421787980 has 24 divisors (see below), whose sum is σ = 122638381006512. Its totient is φ = 11679845810112.

The previous prime is 43799421787973. The next prime is 43799421787981. The reversal of 43799421787980 is 8978712499734.

It is a super-2 number, since 2×43799421787980² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43799421787896 and 43799421787905.

It is not an unprimeable number, because it can be changed into a prime (43799421787981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364995181507 + ... + 364995181626.

It is an arithmetic number, because the mean of its divisors is an integer number (5109932541938).

Almost surely, 2^{43799421787980} is an apocalyptic number.

It is an amenable number.

43799421787980 is an abundant number, since it is smaller than the sum of its proper divisors (78838959218532).

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

43799421787980 is a wasteful number, since it uses less digits than its factorization.

43799421787980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729990363145 (or 729990363143 counting only the distinct ones).

The product of its (nonzero) digits is 1536288768, while the sum is 78.

The spelling of 43799421787980 in words is "forty-three trillion, seven hundred ninety-nine billion, four hundred twenty-one million, seven hundred eighty-seven thousand, nine hundred eighty".