14894272788221 has 2 divisors, whose sum is σ = 14894272788222. Its totient is φ = 14894272788220.

The previous prime is 14894272788139. The next prime is 14894272788247. The reversal of 14894272788221 is 12288727249841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13836688852900 + 1057583935321 = 3719770^2 + 1028389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14894272788221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14894272788821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7447136394110 + 7447136394111.

It is an arithmetic number, because the mean of its divisors is an integer number (7447136394111).

Almost surely, 2^{14894272788221} is an apocalyptic number.

It is an amenable number.

14894272788221 is a deficient number, since it is larger than the sum of its proper divisors (1).

14894272788221 is an equidigital number, since it uses as much as digits as its factorization.

14894272788221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57802752, while the sum is 65.

The spelling of 14894272788221 in words is "fourteen trillion, eight hundred ninety-four billion, two hundred seventy-two million, seven hundred eighty-eight thousand, two hundred twenty-one".