27800411881 has 8 divisors (see below), whose sum is σ = 30362874624. Its totient is φ = 25243807920.

The previous prime is 27800411819. The next prime is 27800411921. The reversal of 27800411881 is 18811400872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27800411881 is a prime.

It is a super-2 number, since 2×27800411881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27800411801) 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, 1454766 + ... + 1473751.

It is an arithmetic number, because the mean of its divisors is an integer number (3795359328).

Almost surely, 2^27800411881 is an apocalyptic number.

It is an amenable number.

27800411881 is a deficient number, since it is larger than the sum of its proper divisors (2562462743).

27800411881 is a wasteful number, since it uses less digits than its factorization.

27800411881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2929391.

The product of its (nonzero) digits is 28672, while the sum is 40.

The spelling of 27800411881 in words is "twenty-seven billion, eight hundred million, four hundred eleven thousand, eight hundred eighty-one".