12145530243 has 48 divisors (see below), whose sum is σ = 20409256448. Its totient is φ = 6288796800.

The previous prime is 12145530217. The next prime is 12145530251. The reversal of 12145530243 is 34203554121.

It is not a de Polignac number, because 12145530243 - 2⁵ = 12145530211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12145530243.

It is not an unprimeable number, because it can be changed into a prime (12145530253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 787698 + ... + 802968.

Almost surely, 2^12145530243 is an apocalyptic number.

12145530243 is a deficient number, since it is larger than the sum of its proper divisors (8263726205).

12145530243 is a wasteful number, since it uses less digits than its factorization.

12145530243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15616 (or 15605 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 12145530243 in words is "twelve billion, one hundred forty-five million, five hundred thirty thousand, two hundred forty-three".