82785556874 has 8 divisors (see below), whose sum is σ = 129577393440. Its totient is φ = 39593092396.

The previous prime is 82785556873. The next prime is 82785556877. The reversal of 82785556874 is 47865558728.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 82785556874.

It is not an unprimeable number, because it can be changed into a prime (82785556873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899842964 + ... + 899843055.

It is an arithmetic number, because the mean of its divisors is an integer number (16197174180).

Almost surely, 2^82785556874 is an apocalyptic number.

82785556874 is a deficient number, since it is larger than the sum of its proper divisors (46791836566).

82785556874 is a wasteful number, since it uses less digits than its factorization.

82785556874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799686044.

The product of its digits is 150528000, while the sum is 65.

The spelling of 82785556874 in words is "eighty-two billion, seven hundred eighty-five million, five hundred fifty-six thousand, eight hundred seventy-four".