43981417012 has 24 divisors (see below), whose sum is σ = 83367193896. Its totient is φ = 20181775488.

The previous prime is 43981417003. The next prime is 43981417013. The reversal of 43981417012 is 21071418934.

It can be written as a sum of positive squares in 4 ways, for example, as 5394314916 + 38587102096 = 73446^2 + 196436^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43981417013) 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, 2435503 + ... + 2453494.

It is an arithmetic number, because the mean of its divisors is an integer number (3473633079).

Almost surely, 2^43981417012 is an apocalyptic number.

It is an amenable number.

43981417012 is a deficient number, since it is larger than the sum of its proper divisors (39385776884).

43981417012 is a wasteful number, since it uses less digits than its factorization.

43981417012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889187 (or 4889185 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 43981417012 in words is "forty-three billion, nine hundred eighty-one million, four hundred seventeen thousand, twelve".