27788765240 has 64 divisors (see below), whose sum is σ = 62962855200. Its totient is φ = 11037895168.

The previous prime is 27788765237. The next prime is 27788765261. The reversal of 27788765240 is 4256788772.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 3406847 + ... + 3414993.

Almost surely, 2^27788765240 is an apocalyptic number.

27788765240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27788765240 is an abundant number, since it is smaller than the sum of its proper divisors (35174089960).

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

27788765240 is a wasteful number, since it uses less digits than its factorization.

27788765240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8744 (or 8740 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 56.

The spelling of 27788765240 in words is "twenty-seven billion, seven hundred eighty-eight million, seven hundred sixty-five thousand, two hundred forty".