1614771447721 has 2 divisors, whose sum is σ = 1614771447722. Its totient is φ = 1614771447720.

The previous prime is 1614771447637. The next prime is 1614771447761. The reversal of 1614771447721 is 1277441774161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1116245075625 + 498526372096 = 1056525^2 + 706064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1614771447721 - 2⁷ = 1614771447593 is a prime.

It is not a weakly prime, because it can be changed into another prime (1614771447761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807385723860 + 807385723861.

It is an arithmetic number, because the mean of its divisors is an integer number (807385723861).

Almost surely, 2^{1614771447721} is an apocalyptic number.

It is an amenable number.

1614771447721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1614771447721 is an equidigital number, since it uses as much as digits as its factorization.

1614771447721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1843968, while the sum is 52.

The spelling of 1614771447721 in words is "one trillion, six hundred fourteen billion, seven hundred seventy-one million, four hundred forty-seven thousand, seven hundred twenty-one".