27768353450 has 12 divisors (see below), whose sum is σ = 51649137510. Its totient is φ = 11107341360.

The previous prime is 27768353413. The next prime is 27768353471. The reversal of 27768353450 is 5435386772.

It can be written as a sum of positive squares in 3 ways, for example, as 27077031601 + 691321849 = 164551^2 + 26293^2 .

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 555367069 = 27768353450 / (2 + 7 + 7 + 6 + 8 + 3 + 5 + 3 + 4 + 5 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277683485 + ... + 277683584.

Almost surely, 2^27768353450 is an apocalyptic number.

27768353450 is a deficient number, since it is larger than the sum of its proper divisors (23880784060).

27768353450 is a wasteful number, since it uses less digits than its factorization.

27768353450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555367081 (or 555367076 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 50.

It can be divided in two parts, 277683 and 53450, that added together give a palindrome (331133).

The spelling of 27768353450 in words is "twenty-seven billion, seven hundred sixty-eight million, three hundred fifty-three thousand, four hundred fifty".