12027530761 has 2 divisors, whose sum is σ = 12027530762. Its totient is φ = 12027530760.

The previous prime is 12027530743. The next prime is 12027530777. The reversal of 12027530761 is 16703572021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9775079161 + 2252451600 = 98869^2 + 47460^2 .

It is a cyclic number.

It is not a de Polignac number, because 12027530761 - 2⁷ = 12027530633 is a prime.

It is a super-2 number, since 2×12027530761² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12027537761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6013765380 + 6013765381.

It is an arithmetic number, because the mean of its divisors is an integer number (6013765381).

Almost surely, 2^12027530761 is an apocalyptic number.

It is an amenable number.

12027530761 is a deficient number, since it is larger than the sum of its proper divisors (1).

12027530761 is an equidigital number, since it uses as much as digits as its factorization.

12027530761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The spelling of 12027530761 in words is "twelve billion, twenty-seven million, five hundred thirty thousand, seven hundred sixty-one".