27149945240 has 64 divisors (see below), whose sum is σ = 66688392960. Its totient is φ = 9865653120.

The previous prime is 27149945237. The next prime is 27149945279. The reversal of 27149945240 is 4254994172.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615359 + ... + 658001.

It is an arithmetic number, because the mean of its divisors is an integer number (1042006140).

Almost surely, 2^27149945240 is an apocalyptic number.

27149945240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27149945240 is an abundant number, since it is smaller than the sum of its proper divisors (39538447720).

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

27149945240 is a wasteful number, since it uses less digits than its factorization.

27149945240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44112 (or 44108 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 27149945240 in words is "twenty-seven billion, one hundred forty-nine million, nine hundred forty-five thousand, two hundred forty".