12145738751 has 4 divisors (see below), whose sum is σ = 12155622600. Its totient is φ = 12135854904.

The previous prime is 12145738747. The next prime is 12145738811. The reversal of 12145738751 is 15783754121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12145738751 - 2² = 12145738747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12145738721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4940081 + ... + 4942538.

It is an arithmetic number, because the mean of its divisors is an integer number (3038905650).

Almost surely, 2^12145738751 is an apocalyptic number.

12145738751 is a deficient number, since it is larger than the sum of its proper divisors (9883849).

12145738751 is an equidigital number, since it uses as much as digits as its factorization.

12145738751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9883848.

The product of its digits is 235200, while the sum is 44.

The spelling of 12145738751 in words is "twelve billion, one hundred forty-five million, seven hundred thirty-eight thousand, seven hundred fifty-one".