27641036868 has 24 divisors (see below), whose sum is σ = 64502064480. Its totient is φ = 9212777280.

The previous prime is 27641036867. The next prime is 27641036869. The reversal of 27641036868 is 86863014672.

It is an interprime number because it is at equal distance from previous prime (27641036867) and next prime (27641036869).

It is a self number, because there is not a number n which added to its sum of digits gives 27641036868.

It is not an unprimeable number, because it can be changed into a prime (27641036867) 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, 21403 + ... + 236093.

It is an arithmetic number, because the mean of its divisors is an integer number (2687586020).

Almost surely, 2^27641036868 is an apocalyptic number.

It is an amenable number.

27641036868 is an abundant number, since it is smaller than the sum of its proper divisors (36861027612).

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

27641036868 is a wasteful number, since it uses less digits than its factorization.

27641036868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225427 (or 225425 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 27641036868 in words is "twenty-seven billion, six hundred forty-one million, thirty-six thousand, eight hundred sixty-eight".