27768542802 has 64 divisors (see below), whose sum is σ = 74567291904. Its totient is φ = 6657791040.

The previous prime is 27768542801. The next prime is 27768542833. The reversal of 27768542802 is 20824586772.

It is a super-2 number, since 2×27768542802² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27768542801) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2305728 + ... + 2317739.

It is an arithmetic number, because the mean of its divisors is an integer number (1165113936).

Almost surely, 2^27768542802 is an apocalyptic number.

27768542802 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27768542802 is an abundant number, since it is smaller than the sum of its proper divisors (46798749102).

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

27768542802 is a wasteful number, since it uses less digits than its factorization.

27768542802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623503.

The product of its (nonzero) digits is 3010560, while the sum is 51.

The spelling of 27768542802 in words is "twenty-seven billion, seven hundred sixty-eight million, five hundred forty-two thousand, eight hundred two".