43013692091 has 2 divisors, whose sum is σ = 43013692092. Its totient is φ = 43013692090.

The previous prime is 43013692087. The next prime is 43013692093. The reversal of 43013692091 is 19029631034.

43013692091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43013692091 - 2² = 43013692087 is a prime.

Together with 43013692093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43013692093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21506846045 + 21506846046.

It is an arithmetic number, because the mean of its divisors is an integer number (21506846046).

Almost surely, 2^43013692091 is an apocalyptic number.

43013692091 is a deficient number, since it is larger than the sum of its proper divisors (1).

43013692091 is an equidigital number, since it uses as much as digits as its factorization.

43013692091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The spelling of 43013692091 in words is "forty-three billion, thirteen million, six hundred ninety-two thousand, ninety-one".