27863621776 has 45 divisors (see below), whose sum is σ = 55950419161. Its totient is φ = 13442055872.

The previous prime is 27863621759. The next prime is 27863621813. The reversal of 27863621776 is 67712636872.

The square root of 27863621776 is 166924.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14611007376 + 13252614400 = 120876^2 + 115120^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19362465 + ... + 19363903.

Almost surely, 2^27863621776 is an apocalyptic number.

27863621776 is the 166924-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27863621776

27863621776 is an abundant number, since it is smaller than the sum of its proper divisors (28086797385).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27863621776 is an frugal number, since it uses more digits than its factorization.

27863621776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944 (or 1470 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 55.

The spelling of 27863621776 in words is "twenty-seven billion, eight hundred sixty-three million, six hundred twenty-one thousand, seven hundred seventy-six".