27463664820 has 24 divisors (see below), whose sum is σ = 76898261664. Its totient is φ = 7323643936.

The previous prime is 27463664819. The next prime is 27463664857. The reversal of 27463664820 is 2846636472.

It is a self number, because there is not a number n which added to its sum of digits gives 27463664820.

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 7 ways as a sum of consecutive naturals, for example, 228863814 + ... + 228863933.

It is an arithmetic number, because the mean of its divisors is an integer number (3204094236).

Almost surely, 2^27463664820 is an apocalyptic number.

27463664820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27463664820 is an abundant number, since it is smaller than the sum of its proper divisors (49434596844).

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

27463664820 is a wasteful number, since it uses less digits than its factorization.

27463664820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457727759 (or 457727757 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 48.

The spelling of 27463664820 in words is "twenty-seven billion, four hundred sixty-three million, six hundred sixty-four thousand, eight hundred twenty".