27768040783 has 16 divisors (see below), whose sum is σ = 33121451520. Its totient is φ = 22761690336.

The previous prime is 27768040757. The next prime is 27768040799. The reversal of 27768040783 is 38704086772.

It is a de Polignac number, because none of the positive numbers 2^k-27768040783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27768040783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27768040733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 930216 + ... + 959602.

It is an arithmetic number, because the mean of its divisors is an integer number (2070090720).

Almost surely, 2^27768040783 is an apocalyptic number.

27768040783 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

27768040783 is a deficient number, since it is larger than the sum of its proper divisors (5353410737).

27768040783 is a wasteful number, since it uses less digits than its factorization.

27768040783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35286.

The product of its (nonzero) digits is 3161088, while the sum is 52.

The spelling of 27768040783 in words is "twenty-seven billion, seven hundred sixty-eight million, forty thousand, seven hundred eighty-three".