82156022347 has 4 divisors (see below), whose sum is σ = 93892596976. Its totient is φ = 70419447720.

The previous prime is 82156022341. The next prime is 82156022357. The reversal of 82156022347 is 74322065128.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82156022347 - 2¹⁹ = 82155498059 is a prime.

It is a super-2 number, since 2×82156022347² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82156022341) 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, 5868287304 + ... + 5868287317.

It is an arithmetic number, because the mean of its divisors is an integer number (23473149244).

Almost surely, 2^82156022347 is an apocalyptic number.

82156022347 is a deficient number, since it is larger than the sum of its proper divisors (11736574629).

82156022347 is a wasteful number, since it uses less digits than its factorization.

82156022347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11736574628.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 82156022347 in words is "eighty-two billion, one hundred fifty-six million, twenty-two thousand, three hundred forty-seven".