12697266981 has 16 divisors (see below), whose sum is σ = 19351205504. Its totient is φ = 7254460224.

The previous prime is 12697266979. The next prime is 12697267039. The reversal of 12697266981 is 18966279621.

It is not a de Polignac number, because 12697266981 - 2¹ = 12697266979 is a prime.

It is a super-2 number, since 2×12697266981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12697266941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103731 + ... + 190143.

It is an arithmetic number, because the mean of its divisors is an integer number (1209450344).

Almost surely, 2^12697266981 is an apocalyptic number.

It is an amenable number.

12697266981 is a deficient number, since it is larger than the sum of its proper divisors (6653938523).

12697266981 is an equidigital number, since it uses as much as digits as its factorization.

12697266981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93420.

The product of its digits is 3919104, while the sum is 57.

The spelling of 12697266981 in words is "twelve billion, six hundred ninety-seven million, two hundred sixty-six thousand, nine hundred eighty-one".