12308088281581 has 2 divisors, whose sum is σ = 12308088281582. Its totient is φ = 12308088281580.

The previous prime is 12308088281549. The next prime is 12308088281611. The reversal of 12308088281581 is 18518288080321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10154840195556 + 2153248086025 = 3186666^2 + 1467395^2 .

It is a cyclic number.

It is not a de Polignac number, because 12308088281581 - 2⁵ = 12308088281549 is a prime.

It is a super-2 number, since 2×12308088281581² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12308088281081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6154044140790 + 6154044140791.

It is an arithmetic number, because the mean of its divisors is an integer number (6154044140791).

Almost surely, 2^{12308088281581} is an apocalyptic number.

It is an amenable number.

12308088281581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12308088281581 is an equidigital number, since it uses as much as digits as its factorization.

12308088281581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1966080, while the sum is 55.

The spelling of 12308088281581 in words is "twelve trillion, three hundred eight billion, eighty-eight million, two hundred eighty-one thousand, five hundred eighty-one".