27731950943 has 2 divisors, whose sum is σ = 27731950944. Its totient is φ = 27731950942.

The previous prime is 27731950937. The next prime is 27731950951. The reversal of 27731950943 is 34905913772.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27731950943 is a prime.

It is a super-2 number, since 2×27731950943² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 27731950891 and 27731950900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27731950963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13865975471 + 13865975472.

It is an arithmetic number, because the mean of its divisors is an integer number (13865975472).

Almost surely, 2^27731950943 is an apocalyptic number.

27731950943 is a deficient number, since it is larger than the sum of its proper divisors (1).

27731950943 is an equidigital number, since it uses as much as digits as its factorization.

27731950943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1428840, while the sum is 50.

The spelling of 27731950943 in words is "twenty-seven billion, seven hundred thirty-one million, nine hundred fifty thousand, nine hundred forty-three".