43121193436 has 12 divisors (see below), whose sum is σ = 77217021112. Its totient is φ = 21059187408.

The previous prime is 43121193421. The next prime is 43121193439. The reversal of 43121193436 is 63439112134.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 43121193395 and 43121193404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43121193439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125352135 + ... + 125352478.

Almost surely, 2^43121193436 is an apocalyptic number.

It is an amenable number.

43121193436 is a deficient number, since it is larger than the sum of its proper divisors (34095827676).

43121193436 is a wasteful number, since it uses less digits than its factorization.

43121193436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250704660 (or 250704658 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The spelling of 43121193436 in words is "forty-three billion, one hundred twenty-one million, one hundred ninety-three thousand, four hundred thirty-six".