27402889321 has 2 divisors, whose sum is σ = 27402889322. Its totient is φ = 27402889320.

The previous prime is 27402889303. The next prime is 27402889331. The reversal of 27402889321 is 12398820472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25468648921 + 1934240400 = 159589^2 + 43980^2 .

It is a cyclic number.

It is not a de Polignac number, because 27402889321 - 2²⁷ = 27268671593 is a prime.

It is not a weakly prime, because it can be changed into another prime (27402889331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13701444660 + 13701444661.

It is an arithmetic number, because the mean of its divisors is an integer number (13701444661).

Almost surely, 2^27402889321 is an apocalyptic number.

It is an amenable number.

27402889321 is a deficient number, since it is larger than the sum of its proper divisors (1).

27402889321 is an equidigital number, since it uses as much as digits as its factorization.

27402889321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 27402889321 in words is "twenty-seven billion, four hundred two million, eight hundred eighty-nine thousand, three hundred twenty-one".