12152561723 has 4 divisors (see below), whose sum is σ = 12152941368. Its totient is φ = 12152182080.

The previous prime is 12152561699. The next prime is 12152561761. The reversal of 12152561723 is 32716525121.

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 12152561723 - 2¹⁰ = 12152560699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12152561783) 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, 136886 + ... + 207467.

It is an arithmetic number, because the mean of its divisors is an integer number (3038235342).

Almost surely, 2^12152561723 is an apocalyptic number.

12152561723 is a deficient number, since it is larger than the sum of its proper divisors (379645).

12152561723 is an equidigital number, since it uses as much as digits as its factorization.

12152561723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379644.

The product of its digits is 25200, while the sum is 35.

The spelling of 12152561723 in words is "twelve billion, one hundred fifty-two million, five hundred sixty-one thousand, seven hundred twenty-three".