82636351827681 has 8 divisors (see below), whose sum is σ = 110417737775904. Its totient is φ = 54972933548960.

The previous prime is 82636351827569. The next prime is 82636351827697. The reversal of 82636351827681 is 18672815363628.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82636351827681 - 2¹¹ = 82636351825633 is a prime.

It is a super-2 number, since 2×82636351827681² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82636351827481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29491915740 + ... + 29491918541.

It is an arithmetic number, because the mean of its divisors is an integer number (13802217221988).

Almost surely, 2^{82636351827681} is an apocalyptic number.

It is an amenable number.

82636351827681 is a deficient number, since it is larger than the sum of its proper divisors (27781385948223).

82636351827681 is a wasteful number, since it uses less digits than its factorization.

82636351827681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58983834751.

The product of its digits is 139345920, while the sum is 66.

The spelling of 82636351827681 in words is "eighty-two trillion, six hundred thirty-six billion, three hundred fifty-one million, eight hundred twenty-seven thousand, six hundred eighty-one".