27775782783 has 48 divisors (see below), whose sum is σ = 47863296000. Its totient is φ = 15187201920.

The previous prime is 27775782781. The next prime is 27775782799. The reversal of 27775782783 is 38728757772.

It is not a de Polignac number, because 27775782783 - 2¹ = 27775782781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 27775782783.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93918 + ... + 253716.

It is an arithmetic number, because the mean of its divisors is an integer number (997152000).

Almost surely, 2^27775782783 is an apocalyptic number.

27775782783 is a deficient number, since it is larger than the sum of its proper divisors (20087513217).

27775782783 is a wasteful number, since it uses less digits than its factorization.

27775782783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159932 (or 159929 counting only the distinct ones).

The product of its digits is 64538880, while the sum is 63.

The spelling of 27775782783 in words is "twenty-seven billion, seven hundred seventy-five million, seven hundred eighty-two thousand, seven hundred eighty-three".