27986022150761 has 2 divisors, whose sum is σ = 27986022150762. Its totient is φ = 27986022150760.

The previous prime is 27986022150721. The next prime is 27986022150763. The reversal of 27986022150761 is 16705122068972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27388276691161 + 597745459600 = 5233381^2 + 773140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27986022150761 is a prime.

Together with 27986022150763, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 27986022150697 and 27986022150706.

It is not a weakly prime, because it can be changed into another prime (27986022150763) 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, 13993011075380 + 13993011075381.

It is an arithmetic number, because the mean of its divisors is an integer number (13993011075381).

Almost surely, 2^{27986022150761} is an apocalyptic number.

It is an amenable number.

27986022150761 is a deficient number, since it is larger than the sum of its proper divisors (1).

27986022150761 is an equidigital number, since it uses as much as digits as its factorization.

27986022150761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 27986022150761 in words is "twenty-seven trillion, nine hundred eighty-six billion, twenty-two million, one hundred fifty thousand, seven hundred sixty-one".