27855103783 has 4 divisors (see below), whose sum is σ = 29997804088. Its totient is φ = 25712403480.

The previous prime is 27855103769. The next prime is 27855103883. The reversal of 27855103783 is 38730155872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27855103783 - 2²⁵ = 27821549351 is a prime.

It is a super-2 number, since 2×27855103783² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27855103753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071350133 + ... + 1071350158.

It is an arithmetic number, because the mean of its divisors is an integer number (7499451022).

Almost surely, 2^27855103783 is an apocalyptic number.

27855103783 is a deficient number, since it is larger than the sum of its proper divisors (2142700305).

27855103783 is a wasteful number, since it uses less digits than its factorization.

27855103783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142700304.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 27855103783 in words is "twenty-seven billion, eight hundred fifty-five million, one hundred three thousand, seven hundred eighty-three".