82634032581 has 4 divisors (see below), whose sum is σ = 110178710112. Its totient is φ = 55089355052.

The previous prime is 82634032573. The next prime is 82634032589. The reversal of 82634032581 is 18523043628.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (82634032573) and next prime (82634032589).

It is a cyclic number.

It is not a de Polignac number, because 82634032581 - 2³ = 82634032573 is a prime.

It is a super-2 number, since 2×82634032581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82634032589) 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, 13772338761 + ... + 13772338766.

It is an arithmetic number, because the mean of its divisors is an integer number (27544677528).

Almost surely, 2^82634032581 is an apocalyptic number.

It is an amenable number.

82634032581 is a deficient number, since it is larger than the sum of its proper divisors (27544677531).

82634032581 is a wasteful number, since it uses less digits than its factorization.

82634032581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27544677530.

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 82634032581 in words is "eighty-two billion, six hundred thirty-four million, thirty-two thousand, five hundred eighty-one".