19701323441 has 2 divisors, whose sum is σ = 19701323442. Its totient is φ = 19701323440.

The previous prime is 19701323393. The next prime is 19701323461. The reversal of 19701323441 is 14432310791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9939093025 + 9762230416 = 99695^2 + 98804^2 .

It is a cyclic number.

It is not a de Polignac number, because 19701323441 - 2⁶ = 19701323377 is a prime.

It is not a weakly prime, because it can be changed into another prime (19701323461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9850661720 + 9850661721.

It is an arithmetic number, because the mean of its divisors is an integer number (9850661721).

Almost surely, 2^19701323441 is an apocalyptic number.

It is an amenable number.

19701323441 is a deficient number, since it is larger than the sum of its proper divisors (1).

19701323441 is an equidigital number, since it uses as much as digits as its factorization.

19701323441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 19701323441 in words is "nineteen billion, seven hundred one million, three hundred twenty-three thousand, four hundred forty-one".