12408695081 has 2 divisors, whose sum is σ = 12408695082. Its totient is φ = 12408695080.

The previous prime is 12408695003. The next prime is 12408695111. The reversal of 12408695081 is 18059680421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9781210000 + 2627485081 = 98900^2 + 51259^2 .

It is a cyclic number.

It is not a de Polignac number, because 12408695081 - 2¹⁴ = 12408678697 is a prime.

It is a super-2 number, since 2×12408695081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12408695881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6204347540 + 6204347541.

It is an arithmetic number, because the mean of its divisors is an integer number (6204347541).

Almost surely, 2^12408695081 is an apocalyptic number.

It is an amenable number.

12408695081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12408695081 is an equidigital number, since it uses as much as digits as its factorization.

12408695081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 12408695081 in words is "twelve billion, four hundred eight million, six hundred ninety-five thousand, eighty-one".