4323722617561 has 2 divisors, whose sum is σ = 4323722617562. Its totient is φ = 4323722617560.

The previous prime is 4323722617553. The next prime is 4323722617637. The reversal of 4323722617561 is 1657162273234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3312239841936 + 1011482775625 = 1819956^2 + 1005725^2 .

It is a cyclic number.

It is not a de Polignac number, because 4323722617561 - 2³ = 4323722617553 is a prime.

It is not a weakly prime, because it can be changed into another prime (4323722618561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2161861308780 + 2161861308781.

It is an arithmetic number, because the mean of its divisors is an integer number (2161861308781).

Almost surely, 2^{4323722617561} is an apocalyptic number.

It is an amenable number.

4323722617561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4323722617561 is an equidigital number, since it uses as much as digits as its factorization.

4323722617561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 49.

The spelling of 4323722617561 in words is "four trillion, three hundred twenty-three billion, seven hundred twenty-two million, six hundred seventeen thousand, five hundred sixty-one".