12571111064 has 8 divisors (see below), whose sum is σ = 23570833260. Its totient is φ = 6285555528.

The previous prime is 12571111039. The next prime is 12571111079. The reversal of 12571111064 is 46011117521.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×12571111064³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 785694434 + ... + 785694449.

Almost surely, 2^12571111064 is an apocalyptic number.

It is an amenable number.

12571111064 is a deficient number, since it is larger than the sum of its proper divisors (10999722196).

12571111064 is a wasteful number, since it uses less digits than its factorization.

12571111064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571388889 (or 1571388885 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 29.

Adding to 12571111064 its reverse (46011117521), we get a palindrome (58582228585).

The spelling of 12571111064 in words is "twelve billion, five hundred seventy-one million, one hundred eleven thousand, sixty-four".