12571571434 has 8 divisors (see below), whose sum is σ = 19966613508. Its totient is φ = 5916033600.

The previous prime is 12571571431. The next prime is 12571571473. The reversal of 12571571434 is 43417517521.

It can be written as a sum of positive squares in 2 ways, for example, as 12491415225 + 80156209 = 111765^2 + 8953^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12571571431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184876017 + ... + 184876084.

Almost surely, 2^12571571434 is an apocalyptic number.

12571571434 is a deficient number, since it is larger than the sum of its proper divisors (7395042074).

12571571434 is a wasteful number, since it uses less digits than its factorization.

12571571434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369752120.

The product of its digits is 117600, while the sum is 40.

The spelling of 12571571434 in words is "twelve billion, five hundred seventy-one million, five hundred seventy-one thousand, four hundred thirty-four".