27131474239 has 2 divisors, whose sum is σ = 27131474240. Its totient is φ = 27131474238.

The previous prime is 27131474203. The next prime is 27131474267. The reversal of 27131474239 is 93247413172.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27131474239 is a prime.

It is a super-2 number, since 2×27131474239² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27131474195 and 27131474204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27131472239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13565737119 + 13565737120.

It is an arithmetic number, because the mean of its divisors is an integer number (13565737120).

Almost surely, 2^27131474239 is an apocalyptic number.

27131474239 is a deficient number, since it is larger than the sum of its proper divisors (1).

27131474239 is an equidigital number, since it uses as much as digits as its factorization.

27131474239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 43.

The spelling of 27131474239 in words is "twenty-seven billion, one hundred thirty-one million, four hundred seventy-four thousand, two hundred thirty-nine".