2019959445541 has 2 divisors, whose sum is σ = 2019959445542. Its totient is φ = 2019959445540.

The previous prime is 2019959445463. The next prime is 2019959445587. The reversal of 2019959445541 is 1455449599102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1466349043041 + 553610402500 = 1210929^2 + 744050^2 .

It is a cyclic number.

It is not a de Polignac number, because 2019959445541 - 2⁹ = 2019959445029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2019959445041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009979722770 + 1009979722771.

It is an arithmetic number, because the mean of its divisors is an integer number (1009979722771).

Almost surely, 2^{2019959445541} is an apocalyptic number.

It is an amenable number.

2019959445541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2019959445541 is an equidigital number, since it uses as much as digits as its factorization.

2019959445541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664000, while the sum is 58.

The spelling of 2019959445541 in words is "two trillion, nineteen billion, nine hundred fifty-nine million, four hundred forty-five thousand, five hundred forty-one".