12510768530 has 16 divisors (see below), whose sum is σ = 24251643864. Its totient is φ = 4619360640.

The previous prime is 12510768499. The next prime is 12510768539. The reversal of 12510768530 is 3586701521.

It can be written as a sum of positive squares in 4 ways, for example, as 10570101721 + 1940666809 = 102811^2 + 44053^2 .

It is a super-2 number, since 2×12510768530² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12510768539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48118211 + ... + 48118470.

Almost surely, 2^12510768530 is an apocalyptic number.

12510768530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12510768530 is a deficient number, since it is larger than the sum of its proper divisors (11740875334).

12510768530 is a wasteful number, since it uses less digits than its factorization.

12510768530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96236701.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 12510768530 in words is "twelve billion, five hundred ten million, seven hundred sixty-eight thousand, five hundred thirty".