20002723441 has 2 divisors, whose sum is σ = 20002723442. Its totient is φ = 20002723440.

The previous prime is 20002723427. The next prime is 20002723459. The reversal of 20002723441 is 14432720002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19114445025 + 888278416 = 138255^2 + 29804^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002723441 - 2⁵ = 20002723409 is a prime.

It is not a weakly prime, because it can be changed into another prime (20002723471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001361720 + 10001361721.

It is an arithmetic number, because the mean of its divisors is an integer number (10001361721).

Almost surely, 2^20002723441 is an apocalyptic number.

It is an amenable number.

20002723441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002723441 is an equidigital number, since it uses as much as digits as its factorization.

20002723441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The spelling of 20002723441 in words is "twenty billion, two million, seven hundred twenty-three thousand, four hundred forty-one".