82644407271 has 16 divisors (see below), whose sum is σ = 123051424000. Its totient is φ = 54819402264.

The previous prime is 82644407207. The next prime is 82644407281. The reversal of 82644407271 is 17270444628.

82644407271 is a `hidden beast` number, since 82 + 64 + 440 + 7 + 2 + 71 = 666.

It is not a de Polignac number, because 82644407271 - 2⁶ = 82644407207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82644407201) 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, 7685341 + ... + 7696086.

It is an arithmetic number, because the mean of its divisors is an integer number (7690714000).

Almost surely, 2^82644407271 is an apocalyptic number.

82644407271 is a deficient number, since it is larger than the sum of its proper divisors (40407016729).

82644407271 is a wasteful number, since it uses less digits than its factorization.

82644407271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15381635 (or 15381629 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The spelling of 82644407271 in words is "eighty-two billion, six hundred forty-four million, four hundred seven thousand, two hundred seventy-one".