43261223911 has 2 divisors, whose sum is σ = 43261223912. Its totient is φ = 43261223910.

The previous prime is 43261223893. The next prime is 43261223939. The reversal of 43261223911 is 11932216234.

43261223911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43261223911 - 2²⁹ = 42724352999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43261223111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21630611955 + 21630611956.

It is an arithmetic number, because the mean of its divisors is an integer number (21630611956).

Almost surely, 2^43261223911 is an apocalyptic number.

43261223911 is a deficient number, since it is larger than the sum of its proper divisors (1).

43261223911 is an equidigital number, since it uses as much as digits as its factorization.

43261223911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The spelling of 43261223911 in words is "forty-three billion, two hundred sixty-one million, two hundred twenty-three thousand, nine hundred eleven".