12175128580 has 24 divisors (see below), whose sum is σ = 26449418520. Its totient is φ = 4702118400.

The previous prime is 12175128577. The next prime is 12175128593. The reversal of 12175128580 is 8582157121.

It can be written as a sum of positive squares in 4 ways, for example, as 292820544 + 11882308036 = 17112^2 + 109006^2 .

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, 10495221 + ... + 10496380.

It is an arithmetic number, because the mean of its divisors is an integer number (1102059105).

Almost surely, 2^12175128580 is an apocalyptic number.

12175128580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12175128580 is an abundant number, since it is smaller than the sum of its proper divisors (14274289940).

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

12175128580 is a wasteful number, since it uses less digits than its factorization.

12175128580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20991639 (or 20991637 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 40.

The spelling of 12175128580 in words is "twelve billion, one hundred seventy-five million, one hundred twenty-eight thousand, five hundred eighty".