27275643161440 has 48 divisors (see below), whose sum is σ = 66660731358480. Its totient is φ = 10534041495040.

The previous prime is 27275643161401. The next prime is 27275643161447. The reversal of 27275643161440 is 4416134657272.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27275643161447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2939181046 + ... + 2939190325.

It is an arithmetic number, because the mean of its divisors is an integer number (1388765236635).

Almost surely, 2^{27275643161440} is an apocalyptic number.

27275643161440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27275643161440 is an abundant number, since it is smaller than the sum of its proper divisors (39385088197040).

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

27275643161440 is a wasteful number, since it uses less digits than its factorization.

27275643161440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5878371415 (or 5878371407 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 52.

The spelling of 27275643161440 in words is "twenty-seven trillion, two hundred seventy-five billion, six hundred forty-three million, one hundred sixty-one thousand, four hundred forty".