12642850517 has 4 divisors (see below), whose sum is σ = 13792200576. Its totient is φ = 11493500460.

The previous prime is 12642850499. The next prime is 12642850523. The reversal of 12642850517 is 71505824621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12642850517 - 2¹⁴ = 12642834133 is a prime.

It is a super-4 number, since 4×12642850517⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12642855517) 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, 574675013 + ... + 574675034.

It is an arithmetic number, because the mean of its divisors is an integer number (3448050144).

Almost surely, 2^12642850517 is an apocalyptic number.

It is an amenable number.

12642850517 is a deficient number, since it is larger than the sum of its proper divisors (1149350059).

12642850517 is a wasteful number, since it uses less digits than its factorization.

12642850517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149350058.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 12642850517 in words is "twelve billion, six hundred forty-two million, eight hundred fifty thousand, five hundred seventeen".