84427872443 has 2 divisors, whose sum is σ = 84427872444. Its totient is φ = 84427872442.

The previous prime is 84427872421. The next prime is 84427872457. The reversal of 84427872443 is 34427872448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84427872443 - 2⁸ = 84427872187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (84427872493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42213936221 + 42213936222.

It is an arithmetic number, because the mean of its divisors is an integer number (42213936222).

Almost surely, 2^84427872443 is an apocalyptic number.

84427872443 is a deficient number, since it is larger than the sum of its proper divisors (1).

84427872443 is an equidigital number, since it uses as much as digits as its factorization.

84427872443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9633792, while the sum is 53.

The spelling of 84427872443 in words is "eighty-four billion, four hundred twenty-seven million, eight hundred seventy-two thousand, four hundred forty-three".