27267123061 has 2 divisors, whose sum is σ = 27267123062. Its totient is φ = 27267123060.

The previous prime is 27267123053. The next prime is 27267123071. The reversal of 27267123061 is 16032176272.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17680754961 + 9586368100 = 132969^2 + 97910^2 .

It is a cyclic number.

It is not a de Polignac number, because 27267123061 - 2³ = 27267123053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27267123061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27267123031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13633561530 + 13633561531.

It is an arithmetic number, because the mean of its divisors is an integer number (13633561531).

Almost surely, 2^27267123061 is an apocalyptic number.

It is an amenable number.

27267123061 is a deficient number, since it is larger than the sum of its proper divisors (1).

27267123061 is an equidigital number, since it uses as much as digits as its factorization.

27267123061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 27267123061 in words is "twenty-seven billion, two hundred sixty-seven million, one hundred twenty-three thousand, sixty-one".