27777652764 has 48 divisors (see below), whose sum is σ = 66825554208. Its totient is φ = 8973877248.

The previous prime is 27777652691. The next prime is 27777652829. The reversal of 27777652764 is 46725677772.

It is a junction number, because it is equal to n+sod(n) for n = 27777652698 and 27777652707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7609 + ... + 235824.

It is an arithmetic number, because the mean of its divisors is an integer number (1392199046).

Almost surely, 2^27777652764 is an apocalyptic number.

It is an amenable number.

27777652764 is an abundant number, since it is smaller than the sum of its proper divisors (39047901444).

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

27777652764 is a wasteful number, since it uses less digits than its factorization.

27777652764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243734 (or 243732 counting only the distinct ones).

The product of its digits is 48404160, while the sum is 60.

The spelling of 27777652764 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred fifty-two thousand, seven hundred sixty-four".