82864869804 has 30 divisors (see below), whose sum is σ = 216625138884.
Its totient is φ = 27621623160.
The previous prime is 82864869781. The next prime is 82864869811. The reversal of 82864869804 is 40896846828.
It is the 17-th Bell number.
It is an unprimeable number.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 127877562 + ... + 127878209.
Almost surely, 282864869804 is an apocalyptic number.
It is an amenable number.
82864869804 is an abundant number, since it is smaller than the sum of its proper divisors (133760269080).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
82864869804 is a wasteful number, since it uses less digits than its factorization.
82864869804 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 255755787 (or 255755776 counting only the distinct ones).
The product of its (nonzero) digits is 42467328, while the sum is 63.
The spelling of 82864869804 in words is "eighty-two billion, eight hundred sixty-four million, eight hundred sixty-nine thousand, eight hundred four".