82155408679 has 8 divisors (see below), whose sum is σ = 82467792000. Its totient is φ = 81843595512.

The previous prime is 82155408677. The next prime is 82155408697. The reversal of 82155408679 is 97680455128.

It is a happy number.

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 82155408679 - 2¹ = 82155408677 is a prime.

It is a super-2 number, since 2×82155408679² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82155408677) 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, 147312 + ... + 431290.

It is an arithmetic number, because the mean of its divisors is an integer number (10308474000).

Almost surely, 2^82155408679 is an apocalyptic number.

82155408679 is a deficient number, since it is larger than the sum of its proper divisors (312383321).

82155408679 is a wasteful number, since it uses less digits than its factorization.

82155408679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285077.

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 82155408679 in words is "eighty-two billion, one hundred fifty-five million, four hundred eight thousand, six hundred seventy-nine".