27421161656 has 96 divisors (see below), whose sum is σ = 60358964400. Its totient is φ = 11644416000.

The previous prime is 27421161641. The next prime is 27421161679. The reversal of 27421161656 is 65616112472.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22531160 + ... + 22532376.

Almost surely, 2^27421161656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27421161656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30179482200).

27421161656 is an abundant number, since it is smaller than the sum of its proper divisors (32937802744).

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

27421161656 is a wasteful number, since it uses less digits than its factorization.

27421161656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717 (or 1706 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The spelling of 27421161656 in words is "twenty-seven billion, four hundred twenty-one million, one hundred sixty-one thousand, six hundred fifty-six".