43243344397 has 32 divisors (see below), whose sum is σ = 51215721984. Its totient is φ = 36063436800.

The previous prime is 43243344373. The next prime is 43243344401. The reversal of 43243344397 is 79344334234.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43243344397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43243341397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11398933 + ... + 11402725.

It is an arithmetic number, because the mean of its divisors is an integer number (1600491312).

Almost surely, 2^43243344397 is an apocalyptic number.

It is an amenable number.

43243344397 is a deficient number, since it is larger than the sum of its proper divisors (7972377587).

43243344397 is a wasteful number, since it uses less digits than its factorization.

43243344397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5349.

The product of its digits is 2612736, while the sum is 46.

It can be divided in two parts, 43243 and 344397, that added together give a triangular number (387640 = T₈₈₀).

The spelling of 43243344397 in words is "forty-three billion, two hundred forty-three million, three hundred forty-four thousand, three hundred ninety-seven".