84777016171 has 2 divisors, whose sum is σ = 84777016172. Its totient is φ = 84777016170.

The previous prime is 84777016111. The next prime is 84777016183. The reversal of 84777016171 is 17161077748.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84777016171 - 2¹³ = 84777007979 is a prime.

It is not a weakly prime, because it can be changed into another prime (84777016111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42388508085 + 42388508086.

It is an arithmetic number, because the mean of its divisors is an integer number (42388508086).

Almost surely, 2^84777016171 is an apocalyptic number.

84777016171 is a deficient number, since it is larger than the sum of its proper divisors (1).

84777016171 is an equidigital number, since it uses as much as digits as its factorization.

84777016171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460992, while the sum is 49.

The spelling of 84777016171 in words is "eighty-four billion, seven hundred seventy-seven million, sixteen thousand, one hundred seventy-one".