84871001771 has 2 divisors, whose sum is σ = 84871001772. Its totient is φ = 84871001770.

The previous prime is 84871001737. The next prime is 84871001779. The reversal of 84871001771 is 17710017848.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84871001771 - 2⁶ = 84871001707 is a prime.

It is a super-3 number, since 3×84871001771³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (84871001779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42435500885 + 42435500886.

It is an arithmetic number, because the mean of its divisors is an integer number (42435500886).

Almost surely, 2^84871001771 is an apocalyptic number.

84871001771 is a deficient number, since it is larger than the sum of its proper divisors (1).

84871001771 is an equidigital number, since it uses as much as digits as its factorization.

84871001771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87808, while the sum is 44.

The spelling of 84871001771 in words is "eighty-four billion, eight hundred seventy-one million, one thousand, seven hundred seventy-one".