27880704131 has 4 divisors (see below), whose sum is σ = 31863661872. Its totient is φ = 23897746392.

The previous prime is 27880704119. The next prime is 27880704169. The reversal of 27880704131 is 13140708872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27880704131 - 2¹⁸ = 27880441987 is a prime.

It is a super-2 number, since 2×27880704131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27880704931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1991478860 + ... + 1991478873.

It is an arithmetic number, because the mean of its divisors is an integer number (7965915468).

Almost surely, 2^27880704131 is an apocalyptic number.

27880704131 is a deficient number, since it is larger than the sum of its proper divisors (3982957741).

27880704131 is an equidigital number, since it uses as much as digits as its factorization.

27880704131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982957740.

The product of its (nonzero) digits is 75264, while the sum is 41.

The spelling of 27880704131 in words is "twenty-seven billion, eight hundred eighty million, seven hundred four thousand, one hundred thirty-one".