12452989634 has 16 divisors (see below), whose sum is σ = 19787101848. Its totient is φ = 5857615872.

The previous prime is 12452989621. The next prime is 12452989663. The reversal of 12452989634 is 43698925421.

It can be written as a sum of positive squares in 4 ways, for example, as 11617606225 + 835383409 = 107785^2 + 28903^2 .

It is a super-2 number, since 2×12452989634² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3287 + ... + 157850.

Almost surely, 2^12452989634 is an apocalyptic number.

12452989634 is a deficient number, since it is larger than the sum of its proper divisors (7334112214).

12452989634 is a wasteful number, since it uses less digits than its factorization.

12452989634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163429.

The product of its digits is 3732480, while the sum is 53.

The spelling of 12452989634 in words is "twelve billion, four hundred fifty-two million, nine hundred eighty-nine thousand, six hundred thirty-four".