27831505951 has 2 divisors, whose sum is σ = 27831505952. Its totient is φ = 27831505950.

The previous prime is 27831505921. The next prime is 27831505973. The reversal of 27831505951 is 15950513872.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27831505951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27831505921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13915752975 + 13915752976.

It is an arithmetic number, because the mean of its divisors is an integer number (13915752976).

Almost surely, 2^27831505951 is an apocalyptic number.

27831505951 is a deficient number, since it is larger than the sum of its proper divisors (1).

27831505951 is an equidigital number, since it uses as much as digits as its factorization.

27831505951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 46.

The spelling of 27831505951 in words is "twenty-seven billion, eight hundred thirty-one million, five hundred five thousand, nine hundred fifty-one".