43197976791 has 6 divisors (see below), whose sum is σ = 62397077600. Its totient is φ = 28798651188.

The previous prime is 43197976781. The next prime is 43197976849. The reversal of 43197976791 is 19767979134.

43197976791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43197976791 - 2⁶ = 43197976727 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 (43197976711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2399887591 + ... + 2399887608.

Almost surely, 2^43197976791 is an apocalyptic number.

43197976791 is a deficient number, since it is larger than the sum of its proper divisors (19199100809).

43197976791 is a wasteful number, since it uses less digits than its factorization.

43197976791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4799775205 (or 4799775202 counting only the distinct ones).

The product of its digits is 18003384, while the sum is 63.

The spelling of 43197976791 in words is "forty-three billion, one hundred ninety-seven million, nine hundred seventy-six thousand, seven hundred ninety-one".