12723145530 has 32 divisors (see below), whose sum is σ = 30903453504. Its totient is φ = 3351960576.

The previous prime is 12723145493. The next prime is 12723145531. The reversal of 12723145530 is 3554132721.

It is a junction number, because it is equal to n+sod(n) for n = 12723145491 and 12723145500.

It is not an unprimeable number, because it can be changed into a prime (12723145531) 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, 2552359 + ... + 2557338.

It is an arithmetic number, because the mean of its divisors is an integer number (965732922).

Almost surely, 2^12723145530 is an apocalyptic number.

12723145530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12723145530 is an abundant number, since it is smaller than the sum of its proper divisors (18180307974).

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

12723145530 is a wasteful number, since it uses less digits than its factorization.

12723145530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109790.

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 12723145530 in words is "twelve billion, seven hundred twenty-three million, one hundred forty-five thousand, five hundred thirty".