27788662436 has 6 divisors (see below), whose sum is σ = 48630159270. Its totient is φ = 13894331216.

The previous prime is 27788662403. The next prime is 27788662441. The reversal of 27788662436 is 63426688772.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21754480036 + 6034182400 = 147494^2 + 77680^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3473582801 + ... + 3473582808.

It is an arithmetic number, because the mean of its divisors is an integer number (8105026545).

Almost surely, 2^27788662436 is an apocalyptic number.

It is an amenable number.

27788662436 is a deficient number, since it is larger than the sum of its proper divisors (20841496834).

27788662436 is a wasteful number, since it uses less digits than its factorization.

27788662436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6947165613 (or 6947165611 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 59.

The spelling of 27788662436 in words is "twenty-seven billion, seven hundred eighty-eight million, six hundred sixty-two thousand, four hundred thirty-six".