23121812412145 has 8 divisors (see below), whose sum is σ = 27746233704000. Its totient is φ = 18497410723440.

The previous prime is 23121812412121. The next prime is 23121812412157. The reversal of 23121812412145 is 54121421812132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-23121812412145 is a prime.

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, 2167291 + ... + 7137280.

It is an arithmetic number, because the mean of its divisors is an integer number (3468279213000).

Almost surely, 2^{23121812412145} is an apocalyptic number.

It is an amenable number.

23121812412145 is a deficient number, since it is larger than the sum of its proper divisors (4624421291855).

23121812412145 is an equidigital number, since it uses as much as digits as its factorization.

23121812412145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9801575.

The product of its digits is 30720, while the sum is 37.

The spelling of 23121812412145 in words is "twenty-three trillion, one hundred twenty-one billion, eight hundred twelve million, four hundred twelve thousand, one hundred forty-five".