12145117817530 has 32 divisors (see below), whose sum is σ = 22172388795648. Its totient is φ = 4788916944000.

The previous prime is 12145117817491. The next prime is 12145117817531. The reversal of 12145117817530 is 3571871154121.

It is not an unprimeable number, because it can be changed into a prime (12145117817531) 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, 3563955 + ... + 6082105.

It is an arithmetic number, because the mean of its divisors is an integer number (692887149864).

Almost surely, 2^{12145117817530} is an apocalyptic number.

12145117817530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12145117817530 is a deficient number, since it is larger than the sum of its proper divisors (10027270978118).

12145117817530 is a wasteful number, since it uses less digits than its factorization.

12145117817530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525022.

The product of its (nonzero) digits is 235200, while the sum is 46.

The spelling of 12145117817530 in words is "twelve trillion, one hundred forty-five billion, one hundred seventeen million, eight hundred seventeen thousand, five hundred thirty".