27775782782 has 16 divisors (see below), whose sum is σ = 45892559232. Its totient is φ = 12502778520.

The previous prime is 27775782781. The next prime is 27775782799. The reversal of 27775782782 is 28728757772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27775782781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6126548 + ... + 6131079.

It is an arithmetic number, because the mean of its divisors is an integer number (2868284952).

Almost surely, 2^27775782782 is an apocalyptic number.

27775782782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27775782782 is a deficient number, since it is larger than the sum of its proper divisors (18116776450).

27775782782 is a wasteful number, since it uses less digits than its factorization.

27775782782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12257743.

The product of its digits is 43025920, while the sum is 62.

The spelling of 27775782782 in words is "twenty-seven billion, seven hundred seventy-five million, seven hundred eighty-two thousand, seven hundred eighty-two".