27984092569 has 2 divisors, whose sum is σ = 27984092570. Its totient is φ = 27984092568.

The previous prime is 27984092533. The next prime is 27984092611. The reversal of 27984092569 is 96529048972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26737155225 + 1246937344 = 163515^2 + 35312^2 .

It is a cyclic number.

It is not a de Polignac number, because 27984092569 - 2¹³ = 27984084377 is a prime.

It is a super-2 number, since 2×27984092569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27984093569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13992046284 + 13992046285.

It is an arithmetic number, because the mean of its divisors is an integer number (13992046285).

Almost surely, 2^27984092569 is an apocalyptic number.

It is an amenable number.

27984092569 is a deficient number, since it is larger than the sum of its proper divisors (1).

27984092569 is an equidigital number, since it uses as much as digits as its factorization.

27984092569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 27984092569 in words is "twenty-seven billion, nine hundred eighty-four million, ninety-two thousand, five hundred sixty-nine".