27954348251 has 2 divisors, whose sum is σ = 27954348252. Its totient is φ = 27954348250.

The previous prime is 27954348209. The next prime is 27954348271. The reversal of 27954348251 is 15284345972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27954348251 - 2¹⁸ = 27954086107 is a prime.

It is a super-2 number, since 2×27954348251² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27954348251.

It is not a weakly prime, because it can be changed into another prime (27954348271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13977174125 + 13977174126.

It is an arithmetic number, because the mean of its divisors is an integer number (13977174126).

Almost surely, 2^27954348251 is an apocalyptic number.

27954348251 is a deficient number, since it is larger than the sum of its proper divisors (1).

27954348251 is an equidigital number, since it uses as much as digits as its factorization.

27954348251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 50.

The spelling of 27954348251 in words is "twenty-seven billion, nine hundred fifty-four million, three hundred forty-eight thousand, two hundred fifty-one".