12971559074 has 4 divisors (see below), whose sum is σ = 19457338614. Its totient is φ = 6485779536.

The previous prime is 12971559037. The next prime is 12971559077. The reversal of 12971559074 is 47095517921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47095517921 = 27539 ⋅1710139.

It can be written as a sum of positive squares in only one way, i.e., 10531890625 + 2439668449 = 102625^2 + 49393^2 .

It is a super-2 number, since 2×12971559074² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12971559077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3242889767 + ... + 3242889770.

Almost surely, 2^12971559074 is an apocalyptic number.

12971559074 is a deficient number, since it is larger than the sum of its proper divisors (6485779540).

12971559074 is an equidigital number, since it uses as much as digits as its factorization.

12971559074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485779539.

The product of its (nonzero) digits is 793800, while the sum is 50.

The spelling of 12971559074 in words is "twelve billion, nine hundred seventy-one million, five hundred fifty-nine thousand, seventy-four".