27211980470309 has 2 divisors, whose sum is σ = 27211980470310. Its totient is φ = 27211980470308.

The previous prime is 27211980470267. The next prime is 27211980470327. The reversal of 27211980470309 is 90307408911272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24371036510209 + 2840943960100 = 4936703^2 + 1685510^2 .

It is a cyclic number.

It is not a de Polignac number, because 27211980470309 - 2²⁴ = 27211963693093 is a prime.

It is a super-2 number, since 2×27211980470309² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27211980470369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13605990235154 + 13605990235155.

It is an arithmetic number, because the mean of its divisors is an integer number (13605990235155).

Almost surely, 2^{27211980470309} is an apocalyptic number.

It is an amenable number.

27211980470309 is a deficient number, since it is larger than the sum of its proper divisors (1).

27211980470309 is an equidigital number, since it uses as much as digits as its factorization.

27211980470309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 27211980470309 in words is "twenty-seven trillion, two hundred eleven billion, nine hundred eighty million, four hundred seventy thousand, three hundred nine".