43681393331712 has 80 divisors (see below), whose sum is σ = 129299957732880. Its totient is φ = 14560464439296.

The previous prime is 43681393331663. The next prime is 43681393331713. The reversal of 43681393331712 is 21713339318634.

43681393331712 is a `hidden beast` number, since 4 + 3 + 6 + 8 + 139 + 333 + 171 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43681393331713) 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, 1579897683 + ... + 1579925330.

It is an arithmetic number, because the mean of its divisors is an integer number (1616249471661).

Almost surely, 2^{43681393331712} is an apocalyptic number.

It is an amenable number.

43681393331712 is an abundant number, since it is smaller than the sum of its proper divisors (85618564401168).

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

43681393331712 is an equidigital number, since it uses as much as digits as its factorization.

43681393331712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159823040 (or 3159823018 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 54.

The spelling of 43681393331712 in words is "forty-three trillion, six hundred eighty-one billion, three hundred ninety-three million, three hundred thirty-one thousand, seven hundred twelve".