82869771887 has 4 divisors (see below), whose sum is σ = 94708310736. Its totient is φ = 71031233040.

The previous prime is 82869771863. The next prime is 82869771899. The reversal of 82869771887 is 78817796828.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82869771887 - 2⁸ = 82869771631 is a prime.

It is a super-3 number, since 3×82869771887³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82869771887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82869776887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5919269414 + ... + 5919269427.

It is an arithmetic number, because the mean of its divisors is an integer number (23677077684).

Almost surely, 2^82869771887 is an apocalyptic number.

82869771887 is a deficient number, since it is larger than the sum of its proper divisors (11838538849).

82869771887 is a wasteful number, since it uses less digits than its factorization.

82869771887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11838538848.

The product of its digits is 151732224, while the sum is 71.

The spelling of 82869771887 in words is "eighty-two billion, eight hundred sixty-nine million, seven hundred seventy-one thousand, eight hundred eighty-seven".