27777668468 has 36 divisors (see below), whose sum is σ = 55754983200. Its totient is φ = 12077242320.

The previous prime is 27777668467. The next prime is 27777668497. The reversal of 27777668468 is 86486677772.

It is a super-4 number, since 4×27777668468⁴ (a number of 43 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27777668398 and 27777668407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27777668461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1236518 + ... + 1258781.

Almost surely, 2^27777668468 is an apocalyptic number.

It is an amenable number.

27777668468 is an abundant number, since it is smaller than the sum of its proper divisors (27977314732).

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

27777668468 is a wasteful number, since it uses less digits than its factorization.

27777668468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495348 (or 2495335 counting only the distinct ones).

The product of its digits is 265531392, while the sum is 68.

The spelling of 27777668468 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred sixty-eight thousand, four hundred sixty-eight".