43091937812 has 24 divisors (see below), whose sum is σ = 94018774080. Its totient is φ = 16789066560.

The previous prime is 43091937769. The next prime is 43091937859. The reversal of 43091937812 is 21873919034.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69954137 + ... + 69954752.

It is an arithmetic number, because the mean of its divisors is an integer number (3917448920).

Almost surely, 2^43091937812 is an apocalyptic number.

It is an amenable number.

43091937812 is an abundant number, since it is smaller than the sum of its proper divisors (50926836268).

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

43091937812 is a wasteful number, since it uses less digits than its factorization.

43091937812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139908911 (or 139908909 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 43091937812 in words is "forty-three billion, ninety-one million, nine hundred thirty-seven thousand, eight hundred twelve".