84942761191 has 2 divisors, whose sum is σ = 84942761192. Its totient is φ = 84942761190.

The previous prime is 84942761173. The next prime is 84942761261. The reversal of 84942761191 is 19116724948.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84942761191 - 2⁵ = 84942761159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84942761161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42471380595 + 42471380596.

It is an arithmetic number, because the mean of its divisors is an integer number (42471380596).

Almost surely, 2^84942761191 is an apocalyptic number.

84942761191 is a deficient number, since it is larger than the sum of its proper divisors (1).

84942761191 is an equidigital number, since it uses as much as digits as its factorization.

84942761191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 52.

The spelling of 84942761191 in words is "eighty-four billion, nine hundred forty-two million, seven hundred sixty-one thousand, one hundred ninety-one".