14686738621 has 2 divisors, whose sum is σ = 14686738622. Its totient is φ = 14686738620.

The previous prime is 14686738567. The next prime is 14686738637. The reversal of 14686738621 is 12683768641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13436055396 + 1250683225 = 115914^2 + 35365^2 .

It is a cyclic number.

It is not a de Polignac number, because 14686738621 - 2¹¹ = 14686736573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14686738691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7343369310 + 7343369311.

It is an arithmetic number, because the mean of its divisors is an integer number (7343369311).

Almost surely, 2^14686738621 is an apocalyptic number.

It is an amenable number.

14686738621 is a deficient number, since it is larger than the sum of its proper divisors (1).

14686738621 is an equidigital number, since it uses as much as digits as its factorization.

14686738621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 52.

The spelling of 14686738621 in words is "fourteen billion, six hundred eighty-six million, seven hundred thirty-eight thousand, six hundred twenty-one".