27213752856 has 128 divisors (see below), whose sum is σ = 70249075200. Its totient is φ = 8781696000.

The previous prime is 27213752851. The next prime is 27213752869. The reversal of 27213752856 is 65825731272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27213752851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43127661 + ... + 43128291.

It is an arithmetic number, because the mean of its divisors is an integer number (548820900).

Almost surely, 2^27213752856 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 27213752856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35124537600).

27213752856 is an abundant number, since it is smaller than the sum of its proper divisors (43035322344).

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

27213752856 is a wasteful number, since it uses less digits than its factorization.

27213752856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1117 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The spelling of 27213752856 in words is "twenty-seven billion, two hundred thirteen million, seven hundred fifty-two thousand, eight hundred fifty-six".