43870983911 has 2 divisors, whose sum is σ = 43870983912. Its totient is φ = 43870983910.

The previous prime is 43870983901. The next prime is 43870983913. The reversal of 43870983911 is 11938907834.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43870983911 - 2⁶ = 43870983847 is a prime.

Together with 43870983913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43870983913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21935491955 + 21935491956.

It is an arithmetic number, because the mean of its divisors is an integer number (21935491956).

Almost surely, 2^43870983911 is an apocalyptic number.

43870983911 is a deficient number, since it is larger than the sum of its proper divisors (1).

43870983911 is an equidigital number, since it uses as much as digits as its factorization.

43870983911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 43870983911 in words is "forty-three billion, eight hundred seventy million, nine hundred eighty-three thousand, nine hundred eleven".