27493867489944 has 64 divisors (see below), whose sum is σ = 70334335146240. Its totient is φ = 8951340827520.

The previous prime is 27493867489883. The next prime is 27493867489961. The reversal of 27493867489944 is 44998476839472.

It is a super-2 number, since 2×27493867489944² (a number of 28 digits) contains 22 as substring.

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, 72388054 + ... + 72766874.

It is an arithmetic number, because the mean of its divisors is an integer number (1098973986660).

Almost surely, 2^{27493867489944} is an apocalyptic number.

27493867489944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27493867489944 is an abundant number, since it is smaller than the sum of its proper divisors (42840467656296).

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

27493867489944 is a wasteful number, since it uses less digits than its factorization.

27493867489944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449200 (or 449196 counting only the distinct ones).

The product of its digits is 21069103104, while the sum is 84.

The spelling of 27493867489944 in words is "twenty-seven trillion, four hundred ninety-three billion, eight hundred sixty-seven million, four hundred eighty-nine thousand, nine hundred forty-four".