27751781856016 has 15 divisors (see below), whose sum is σ = 53769118173031. Its totient is φ = 13875880392016.

The previous prime is 27751781855983. The next prime is 27751781856041. The reversal of 27751781856016 is 61065818715772.

It is a happy number.

The square root of 27751781856016 is 5267996.

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

It is a super-2 number, since 2×27751781856016² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 20413485 + ... + 21730483.

Almost surely, 2^{27751781856016} is an apocalyptic number.

27751781856016 is the 5267996-th square number.

It is an amenable number.

27751781856016 is a deficient number, since it is larger than the sum of its proper divisors (26017336317015).

27751781856016 is an frugal number, since it uses more digits than its factorization.

27751781856016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634006 (or 1317001 counting only the distinct ones).

The product of its (nonzero) digits is 39513600, while the sum is 64.

The spelling of 27751781856016 in words is "twenty-seven trillion, seven hundred fifty-one billion, seven hundred eighty-one million, eight hundred fifty-six thousand, sixteen".