82782775805 has 8 divisors (see below), whose sum is σ = 101023048800. Its totient is φ = 65103742096.

The previous prime is 82782775769. The next prime is 82782775837. The reversal of 82782775805 is 50857728728.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 82782775805 - 2³⁶ = 14063299069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140309495 + ... + 140310084.

It is an arithmetic number, because the mean of its divisors is an integer number (12627881100).

Almost surely, 2^82782775805 is an apocalyptic number.

It is an amenable number.

82782775805 is a deficient number, since it is larger than the sum of its proper divisors (18240272995).

82782775805 is a wasteful number, since it uses less digits than its factorization.

82782775805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280619643.

The product of its (nonzero) digits is 17561600, while the sum is 59.

The spelling of 82782775805 in words is "eighty-two billion, seven hundred eighty-two million, seven hundred seventy-five thousand, eight hundred five".