82749999867 has 16 divisors (see below), whose sum is σ = 116832448512. Its totient is φ = 51917604480.

The previous prime is 82749999847. The next prime is 82749999881. The reversal of 82749999867 is 76899994728.

It is not a de Polignac number, because 82749999867 - 2¹¹ = 82749997819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82749999792 and 82749999801.

It is not an unprimeable number, because it can be changed into a prime (82749999847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704742 + ... + 813732.

It is an arithmetic number, because the mean of its divisors is an integer number (7302028032).

Almost surely, 2^82749999867 is an apocalyptic number.

82749999867 is a deficient number, since it is larger than the sum of its proper divisors (34082448645).

82749999867 is a wasteful number, since it uses less digits than its factorization.

82749999867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123898.

The product of its digits is 987614208, while the sum is 78.

The spelling of 82749999867 in words is "eighty-two billion, seven hundred forty-nine million, nine hundred ninety-nine thousand, eight hundred sixty-seven".