82540864429 has 4 divisors (see below), whose sum is σ = 83671561276. Its totient is φ = 81410167584.

The previous prime is 82540864423. The next prime is 82540864463. The reversal of 82540864429 is 92446804528.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 44719560900 + 37821303529 = 211470^2 + 194477^2 .

It is a cyclic number.

It is not a de Polignac number, because 82540864429 - 2⁹ = 82540863917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82540864423) 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, 565348314 + ... + 565348459.

It is an arithmetic number, because the mean of its divisors is an integer number (20917890319).

Almost surely, 2^82540864429 is an apocalyptic number.

It is an amenable number.

82540864429 is a deficient number, since it is larger than the sum of its proper divisors (1130696847).

82540864429 is a wasteful number, since it uses less digits than its factorization.

82540864429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130696846.

The product of its (nonzero) digits is 4423680, while the sum is 52.

The spelling of 82540864429 in words is "eighty-two billion, five hundred forty million, eight hundred sixty-four thousand, four hundred twenty-nine".