27765144156772 has 24 divisors (see below), whose sum is σ = 53875138145472. Its totient is φ = 12413626298400.

The previous prime is 27765144156769. The next prime is 27765144156773.

27765144156772 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (27765144156773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5172341608 + ... + 5172346975.

It is an arithmetic number, because the mean of its divisors is an integer number (2244797422728).

Almost surely, 2^{27765144156772} is an apocalyptic number.

27765144156772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27765144156772 is a deficient number, since it is larger than the sum of its proper divisors (26109993988700).

27765144156772 is a wasteful number, since it uses less digits than its factorization.

27765144156772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10344688659 (or 10344688657 counting only the distinct ones).

The product of its digits is 138297600, while the sum is 64.

The spelling of 27765144156772 in words is "twenty-seven trillion, seven hundred sixty-five billion, one hundred forty-four million, one hundred fifty-six thousand, seven hundred seventy-two".