14512211561 has 4 divisors (see below), whose sum is σ = 14563856724. Its totient is φ = 14460566400.

The previous prime is 14512211543. The next prime is 14512211579. The reversal of 14512211561 is 16511221541.

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

It is an interprime number because it is at equal distance from previous prime (14512211543) and next prime (14512211579).

It can be written as a sum of positive squares in 2 ways, for example, as 5072145961 + 9440065600 = 71219^2 + 97160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14512211561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14512211501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25822160 + ... + 25822721.

It is an arithmetic number, because the mean of its divisors is an integer number (3640964181).

Almost surely, 2^14512211561 is an apocalyptic number.

It is an amenable number.

14512211561 is a deficient number, since it is larger than the sum of its proper divisors (51645163).

14512211561 is an equidigital number, since it uses as much as digits as its factorization.

14512211561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51645162.

The product of its digits is 2400, while the sum is 29.

The spelling of 14512211561 in words is "fourteen billion, five hundred twelve million, two hundred eleven thousand, five hundred sixty-one".