27643860140 has 48 divisors (see below), whose sum is σ = 66195172512. Its totient is φ = 9606552576.

The previous prime is 27643860121. The next prime is 27643860143. The reversal of 27643860140 is 4106834672.

It is not an unprimeable number, because it can be changed into a prime (27643860143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3122714 + ... + 3131553.

It is an arithmetic number, because the mean of its divisors is an integer number (1379066094).

Almost surely, 2^27643860140 is an apocalyptic number.

27643860140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27643860140 is an abundant number, since it is smaller than the sum of its proper divisors (38551312372).

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

27643860140 is a wasteful number, since it uses less digits than its factorization.

27643860140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6254306 (or 6254304 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 27643860140 in words is "twenty-seven billion, six hundred forty-three million, eight hundred sixty thousand, one hundred forty".