82531783691 has 16 divisors (see below), whose sum is σ = 99295257600. Its totient is φ = 67012282368.

The previous prime is 82531783687. The next prime is 82531783759. The reversal of 82531783691 is 19638713528.

It is a cyclic number.

It is not a de Polignac number, because 82531783691 - 2² = 82531783687 is a prime.

It is a super-2 number, since 2×82531783691² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82531783891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2033291 + ... + 2073483.

It is an arithmetic number, because the mean of its divisors is an integer number (6205953600).

Almost surely, 2^82531783691 is an apocalyptic number.

82531783691 is a deficient number, since it is larger than the sum of its proper divisors (16763473909).

82531783691 is a wasteful number, since it uses less digits than its factorization.

82531783691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55658.

The product of its digits is 2177280, while the sum is 53.

The spelling of 82531783691 in words is "eighty-two billion, five hundred thirty-one million, seven hundred eighty-three thousand, six hundred ninety-one".