12045504901 has 4 divisors (see below), whose sum is σ = 12046164652. Its totient is φ = 12044845152.

The previous prime is 12045504883. The next prime is 12045504943. The reversal of 12045504901 is 10940554021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4718316100 + 7327188801 = 68690^2 + 85599^2 .

It is a cyclic number.

It is not a de Polignac number, because 12045504901 - 2¹⁵ = 12045472133 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 (12045504001) 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, 301686 + ... + 339271.

It is an arithmetic number, because the mean of its divisors is an integer number (3011541163).

Almost surely, 2^12045504901 is an apocalyptic number.

It is an amenable number.

12045504901 is a deficient number, since it is larger than the sum of its proper divisors (659751).

12045504901 is an equidigital number, since it uses as much as digits as its factorization.

12045504901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659750.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 12045504901 in words is "twelve billion, forty-five million, five hundred four thousand, nine hundred one".