82529681807 has 4 divisors (see below), whose sum is σ = 82541703480. Its totient is φ = 82517660136.

The previous prime is 82529681803. The next prime is 82529681827. The reversal of 82529681807 is 70818692528.

It is a happy number.

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 82529681807 - 2² = 82529681803 is a prime.

It is a super-2 number, since 2×82529681807² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82529681803) 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, 6000533 + ... + 6014270.

It is an arithmetic number, because the mean of its divisors is an integer number (20635425870).

Almost surely, 2^82529681807 is an apocalyptic number.

82529681807 is a deficient number, since it is larger than the sum of its proper divisors (12021673).

82529681807 is a wasteful number, since it uses less digits than its factorization.

82529681807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12021672.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 82529681807 in words is "eighty-two billion, five hundred twenty-nine million, six hundred eighty-one thousand, eight hundred seven".