84187748719 has 2 divisors, whose sum is σ = 84187748720. Its totient is φ = 84187748718.

The previous prime is 84187748657. The next prime is 84187748741. The reversal of 84187748719 is 91784778148.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84187748719 - 2²⁷ = 84053530991 is a prime.

It is a super-2 number, since 2×84187748719² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84187748779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42093874359 + 42093874360.

It is an arithmetic number, because the mean of its divisors is an integer number (42093874360).

Almost surely, 2^84187748719 is an apocalyptic number.

84187748719 is a deficient number, since it is larger than the sum of its proper divisors (1).

84187748719 is an equidigital number, since it uses as much as digits as its factorization.

84187748719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25288704, while the sum is 64.

The spelling of 84187748719 in words is "eighty-four billion, one hundred eighty-seven million, seven hundred forty-eight thousand, seven hundred nineteen".