4371173379721 has 2 divisors, whose sum is σ = 4371173379722. Its totient is φ = 4371173379720.

The previous prime is 4371173379619. The next prime is 4371173379733. The reversal of 4371173379721 is 1279733711734.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4025941925625 + 345231454096 = 2006475^2 + 587564^2 .

It is a cyclic number.

It is not a de Polignac number, because 4371173379721 - 2¹⁷ = 4371173248649 is a prime.

It is not a weakly prime, because it can be changed into another prime (4371173379421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2185586689860 + 2185586689861.

It is an arithmetic number, because the mean of its divisors is an integer number (2185586689861).

Almost surely, 2^{4371173379721} is an apocalyptic number.

It is an amenable number.

4371173379721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4371173379721 is an equidigital number, since it uses as much as digits as its factorization.

4371173379721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4667544, while the sum is 55.

The spelling of 4371173379721 in words is "four trillion, three hundred seventy-one billion, one hundred seventy-three million, three hundred seventy-nine thousand, seven hundred twenty-one".