27697147140 has 48 divisors (see below), whose sum is σ = 83517553728. Its totient is φ = 6817759104.

The previous prime is 27697147139. The next prime is 27697147157. The reversal of 27697147140 is 4174179672.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 27697147140.

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, 17753802 + ... + 17755361.

It is an arithmetic number, because the mean of its divisors is an integer number (1739949036).

Almost surely, 2^27697147140 is an apocalyptic number.

27697147140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27697147140 is an abundant number, since it is smaller than the sum of its proper divisors (55820406588).

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

27697147140 is a wasteful number, since it uses less digits than its factorization.

27697147140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35509188 (or 35509186 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 48.

The spelling of 27697147140 in words is "twenty-seven billion, six hundred ninety-seven million, one hundred forty-seven thousand, one hundred forty".