12810115530 has 24 divisors (see below), whose sum is σ = 33306300612. Its totient is φ = 3416030784.

The previous prime is 12810115511. The next prime is 12810115537. The reversal of 12810115530 is 3551101821.

12810115530 is a `hidden beast` number, since 1 + 2 + 8 + 10 + 115 + 530 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12647476521 + 162639009 = 112461^2 + 12753^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12810115494 and 12810115503.

It is not an unprimeable number, because it can be changed into a prime (12810115537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71167219 + ... + 71167398.

Almost surely, 2^12810115530 is an apocalyptic number.

12810115530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12810115530 is an abundant number, since it is smaller than the sum of its proper divisors (20496185082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12810115530 is a wasteful number, since it uses less digits than its factorization.

12810115530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142334630 (or 142334627 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The spelling of 12810115530 in words is "twelve billion, eight hundred ten million, one hundred fifteen thousand, five hundred thirty".