12516243610 has 32 divisors (see below), whose sum is σ = 24304451472. Its totient is φ = 4613345280.

The previous prime is 12516243529. The next prime is 12516243611. The reversal of 12516243610 is 1634261521.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10451177361 + 2065066249 = 102231^2 + 45443^2 .

It is not an unprimeable number, because it can be changed into a prime (12516243611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8421 + ... + 158440.

Almost surely, 2^12516243610 is an apocalyptic number.

12516243610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12516243610 is a deficient number, since it is larger than the sum of its proper divisors (11788207862).

12516243610 is a wasteful number, since it uses less digits than its factorization.

12516243610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167458.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 12516243610 in words is "twelve billion, five hundred sixteen million, two hundred forty-three thousand, six hundred ten".