82122772831 has 16 divisors (see below), whose sum is σ = 94901165568. Its totient is φ = 70233788800.

The previous prime is 82122772829. The next prime is 82122772847. The reversal of 82122772831 is 13827722128.

It is a cyclic number.

It is not a de Polignac number, because 82122772831 - 2¹ = 82122772829 is a prime.

It is a super-2 number, since 2×82122772831² (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 (82122772811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321546 + ... + 517336.

It is an arithmetic number, because the mean of its divisors is an integer number (5931322848).

Almost surely, 2^82122772831 is an apocalyptic number.

82122772831 is a deficient number, since it is larger than the sum of its proper divisors (12778392737).

82122772831 is a wasteful number, since it uses less digits than its factorization.

82122772831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198062.

The product of its digits is 150528, while the sum is 43.

The spelling of 82122772831 in words is "eighty-two billion, one hundred twenty-two million, seven hundred seventy-two thousand, eight hundred thirty-one".