27555279361 has 2 divisors, whose sum is σ = 27555279362. Its totient is φ = 27555279360.

The previous prime is 27555279319. The next prime is 27555279371. The reversal of 27555279361 is 16397255572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23007125761 + 4548153600 = 151681^2 + 67440^2 .

It is a cyclic number.

It is not a de Polignac number, because 27555279361 - 2²⁹ = 27018408449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27555279299 and 27555279308.

It is not a weakly prime, because it can be changed into another prime (27555279371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13777639680 + 13777639681.

It is an arithmetic number, because the mean of its divisors is an integer number (13777639681).

Almost surely, 2^27555279361 is an apocalyptic number.

It is an amenable number.

27555279361 is a deficient number, since it is larger than the sum of its proper divisors (1).

27555279361 is an equidigital number, since it uses as much as digits as its factorization.

27555279361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3969000, while the sum is 52.

It can be divided in two parts, 27555 and 279361, that added together give a square (306916 = 554²).

The spelling of 27555279361 in words is "twenty-seven billion, five hundred fifty-five million, two hundred seventy-nine thousand, three hundred sixty-one".