82991224527 has 16 divisors (see below), whose sum is σ = 114479885280. Its totient is φ = 53415331200.

The previous prime is 82991224523. The next prime is 82991224559. The reversal of 82991224527 is 72542219928.

It is not a de Polignac number, because 82991224527 - 2² = 82991224523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82991224527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82991224523) 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, 1321377 + ... + 1382757.

It is an arithmetic number, because the mean of its divisors is an integer number (7154992830).

Almost surely, 2^82991224527 is an apocalyptic number.

82991224527 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

82991224527 is a deficient number, since it is larger than the sum of its proper divisors (31488660753).

82991224527 is a wasteful number, since it uses less digits than its factorization.

82991224527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76954.

The product of its digits is 1451520, while the sum is 51.

The spelling of 82991224527 in words is "eighty-two billion, nine hundred ninety-one million, two hundred twenty-four thousand, five hundred twenty-seven".