27954559019461 has 2 divisors, whose sum is σ = 27954559019462. Its totient is φ = 27954559019460.

The previous prime is 27954559019459. The next prime is 27954559019467. The reversal of 27954559019461 is 16491095545972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27899840920900 + 54718098561 = 5282030^2 + 233919^2 .

It is a cyclic number.

It is not a de Polignac number, because 27954559019461 - 2¹ = 27954559019459 is a prime.

Together with 27954559019459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27954559019467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13977279509730 + 13977279509731.

It is an arithmetic number, because the mean of its divisors is an integer number (13977279509731).

Almost surely, 2^{27954559019461} is an apocalyptic number.

It is an amenable number.

27954559019461 is a deficient number, since it is larger than the sum of its proper divisors (1).

27954559019461 is an equidigital number, since it uses as much as digits as its factorization.

27954559019461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472000, while the sum is 67.

The spelling of 27954559019461 in words is "twenty-seven trillion, nine hundred fifty-four billion, five hundred fifty-nine million, nineteen thousand, four hundred sixty-one".