82216639455 has 16 divisors (see below), whose sum is σ = 133348633440. Its totient is φ = 43248204288.

The previous prime is 82216639441. The next prime is 82216639499. The reversal of 82216639455 is 55493661228.

It is a happy number.

It is not a de Polignac number, because 82216639455 - 2²¹ = 82214542303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82216639398 and 82216639407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37540750 + ... + 37542939.

It is an arithmetic number, because the mean of its divisors is an integer number (8334289590).

Almost surely, 2^82216639455 is an apocalyptic number.

82216639455 is a deficient number, since it is larger than the sum of its proper divisors (51131993985).

82216639455 is a wasteful number, since it uses less digits than its factorization.

82216639455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75083770.

The product of its digits is 3110400, while the sum is 51.

The spelling of 82216639455 in words is "eighty-two billion, two hundred sixteen million, six hundred thirty-nine thousand, four hundred fifty-five".