82002808643 has 12 divisors (see below), whose sum is σ = 100411603560. Its totient is φ = 66588746112.

The previous prime is 82002808609. The next prime is 82002808651. The reversal of 82002808643 is 34680820028.

It is not a de Polignac number, because 82002808643 - 2¹² = 82002804547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82002808643.

It is not an unprimeable number, because it can be changed into a prime (82002808603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44039246 + ... + 44041107.

It is an arithmetic number, because the mean of its divisors is an integer number (8367633630).

Almost surely, 2^82002808643 is an apocalyptic number.

82002808643 is a deficient number, since it is larger than the sum of its proper divisors (18408794917).

82002808643 is a wasteful number, since it uses less digits than its factorization.

82002808643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88080386 (or 88080379 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 41.

The spelling of 82002808643 in words is "eighty-two billion, two million, eight hundred eight thousand, six hundred forty-three".