12372020305 has 8 divisors (see below), whose sum is σ = 15089808744. Its totient is φ = 9735360000.

The previous prime is 12372020303. The next prime is 12372020333. The reversal of 12372020305 is 50302027321.

It can be written as a sum of positive squares in 4 ways, for example, as 22810176 + 12349210129 = 4776^2 + 111127^2 .

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

It is not a de Polignac number, because 12372020305 - 2¹ = 12372020303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12372020305.

It is not an unprimeable number, because it can be changed into a prime (12372020303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20281696 + ... + 20282305.

It is an arithmetic number, because the mean of its divisors is an integer number (1886226093).

Almost surely, 2^12372020305 is an apocalyptic number.

It is an amenable number.

12372020305 is a deficient number, since it is larger than the sum of its proper divisors (2717788439).

12372020305 is an equidigital number, since it uses as much as digits as its factorization.

12372020305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40564067.

The product of its (nonzero) digits is 2520, while the sum is 25.

Adding to 12372020305 its reverse (50302027321), we get a palindrome (62674047626).

The spelling of 12372020305 in words is "twelve billion, three hundred seventy-two million, twenty thousand, three hundred five".