12695233081 has 2 divisors, whose sum is σ = 12695233082. Its totient is φ = 12695233080.

The previous prime is 12695233063. The next prime is 12695233147. The reversal of 12695233081 is 18033259621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10346958400 + 2348274681 = 101720^2 + 48459^2 .

It is a cyclic number.

It is not a de Polignac number, because 12695233081 - 2¹⁷ = 12695102009 is a prime.

It is a super-2 number, since 2×12695233081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12695233381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6347616540 + 6347616541.

It is an arithmetic number, because the mean of its divisors is an integer number (6347616541).

Almost surely, 2^12695233081 is an apocalyptic number.

It is an amenable number.

12695233081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12695233081 is an equidigital number, since it uses as much as digits as its factorization.

12695233081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 12695233081 in words is "twelve billion, six hundred ninety-five million, two hundred thirty-three thousand, eighty-one".