43838467811 has 2 divisors, whose sum is σ = 43838467812. Its totient is φ = 43838467810.

The previous prime is 43838467807. The next prime is 43838467837. The reversal of 43838467811 is 11876483834.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43838467811 - 2² = 43838467807 is a prime.

It is a super-2 number, since 2×43838467811² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (43838460811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21919233905 + 21919233906.

It is an arithmetic number, because the mean of its divisors is an integer number (21919233906).

Almost surely, 2^43838467811 is an apocalyptic number.

43838467811 is a deficient number, since it is larger than the sum of its proper divisors (1).

43838467811 is an equidigital number, since it uses as much as digits as its factorization.

43838467811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3096576, while the sum is 53.

The spelling of 43838467811 in words is "forty-three billion, eight hundred thirty-eight million, four hundred sixty-seven thousand, eight hundred eleven".