82182926781 has 32 divisors (see below), whose sum is σ = 129965644800. Its totient is φ = 51173927280.

The previous prime is 82182926773. The next prime is 82182926797. The reversal of 82182926781 is 18762928128.

82182926781 is a `hidden beast` number, since 8 + 218 + 292 + 67 + 81 = 666.

It is not a de Polignac number, because 82182926781 - 2³ = 82182926773 is a prime.

It is a super-2 number, since 2×82182926781² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82182926701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1091751 + ... + 1164596.

It is an arithmetic number, because the mean of its divisors is an integer number (4061426400).

Almost surely, 2^82182926781 is an apocalyptic number.

It is an amenable number.

82182926781 is a deficient number, since it is larger than the sum of its proper divisors (47782718019).

82182926781 is a wasteful number, since it uses less digits than its factorization.

82182926781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256446 (or 2256440 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The spelling of 82182926781 in words is "eighty-two billion, one hundred eighty-two million, nine hundred twenty-six thousand, seven hundred eighty-one".