27680018836 has 24 divisors (see below), whose sum is σ = 48642257664. Its totient is φ = 13782317280.

The previous prime is 27680018819. The next prime is 27680018879. The reversal of 27680018836 is 63881008672.

It is a super-2 number, since 2×27680018836² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27680018836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1362046 + ... + 1382218.

It is an arithmetic number, because the mean of its divisors is an integer number (2026760736).

Almost surely, 2^27680018836 is an apocalyptic number.

It is an amenable number.

27680018836 is a deficient number, since it is larger than the sum of its proper divisors (20962238828).

27680018836 is a wasteful number, since it uses less digits than its factorization.

27680018836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21591 (or 21589 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 27680018836 in words is "twenty-seven billion, six hundred eighty million, eighteen thousand, eight hundred thirty-six".