27752266418 has 6 divisors (see below), whose sum is σ = 41628753021. Its totient is φ = 13876015412.

The previous prime is 27752266309. The next prime is 27752266481. The reversal of 27752266418 is 81466225772.

It can be written as a sum of positive squares in 2 ways, for example, as 24991499569 + 2760766849 = 158087^2 + 52543^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=117797.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 176696 + ... + 294492.

Almost surely, 2^27752266418 is an apocalyptic number.

27752266418 is a deficient number, since it is larger than the sum of its proper divisors (13876486603).

27752266418 is an frugal number, since it uses more digits than its factorization.

27752266418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235596 (or 117799 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 50.

Multiplying 27752266418 by its sum of digits (50), we get a square (1387613320900 = 1177970²).

The spelling of 27752266418 in words is "twenty-seven billion, seven hundred fifty-two million, two hundred sixty-six thousand, four hundred eighteen".