14636725821 has 12 divisors (see below), whose sum is σ = 21276601372. Its totient is φ = 9695664576.

The previous prime is 14636725813. The next prime is 14636725823. The reversal of 14636725821 is 12852763641.

14636725821 is a `hidden beast` number, since 1 + 4 + 6 + 3 + 67 + 2 + 582 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1546848900 + 13089876921 = 39330^2 + 114411^2 .

It is not a de Polignac number, because 14636725821 - 2³ = 14636725813 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 (14636725823) 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 11 ways as a sum of consecutive naturals, for example, 5177896 + ... + 5180721.

Almost surely, 2^14636725821 is an apocalyptic number.

It is an amenable number.

14636725821 is a deficient number, since it is larger than the sum of its proper divisors (6639875551).

14636725821 is a wasteful number, since it uses less digits than its factorization.

14636725821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10358780 (or 10358777 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 14636725821 in words is "fourteen billion, six hundred thirty-six million, seven hundred twenty-five thousand, eight hundred twenty-one".