27143166021 has 16 divisors (see below), whose sum is σ = 36404121600. Its totient is φ = 17988889328.

The previous prime is 27143165953. The next prime is 27143166067. The reversal of 27143166021 is 12066134172.

It is a cyclic number.

It is not a de Polignac number, because 27143166021 - 2¹⁷ = 27143034949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27143166521) 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, 2565340 + ... + 2575898.

It is an arithmetic number, because the mean of its divisors is an integer number (2275257600).

Almost surely, 2^27143166021 is an apocalyptic number.

It is an amenable number.

27143166021 is a deficient number, since it is larger than the sum of its proper divisors (9260955579).

27143166021 is a wasteful number, since it uses less digits than its factorization.

27143166021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15528.

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 27143166021 in words is "twenty-seven billion, one hundred forty-three million, one hundred sixty-six thousand, twenty-one".