82777140171 has 24 divisors (see below), whose sum is σ = 132223521456. Its totient is φ = 49480727040.

The previous prime is 82777140151. The next prime is 82777140181. The reversal of 82777140171 is 17104177728.

It is not a de Polignac number, because 82777140171 - 2¹³ = 82777131979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82777140151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5719710 + ... + 5734163.

It is an arithmetic number, because the mean of its divisors is an integer number (5509313394).

Almost surely, 2^82777140171 is an apocalyptic number.

82777140171 is a deficient number, since it is larger than the sum of its proper divisors (49446381285).

82777140171 is a wasteful number, since it uses less digits than its factorization.

82777140171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11453963 (or 11453960 counting only the distinct ones).

The product of its (nonzero) digits is 153664, while the sum is 45.

The spelling of 82777140171 in words is "eighty-two billion, seven hundred seventy-seven million, one hundred forty thousand, one hundred seventy-one".