3020400980561 has 2 divisors, whose sum is σ = 3020400980562. Its totient is φ = 3020400980560.

The previous prime is 3020400980449. The next prime is 3020400980573. The reversal of 3020400980561 is 1650890040203.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2507057390161 + 513343590400 = 1583369^2 + 716480^2 .

It is a cyclic number.

It is not a de Polignac number, because 3020400980561 - 2¹⁸ = 3020400718417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3020400980161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1510200490280 + 1510200490281.

It is an arithmetic number, because the mean of its divisors is an integer number (1510200490281).

Almost surely, 2^{3020400980561} is an apocalyptic number.

It is an amenable number.

3020400980561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3020400980561 is an equidigital number, since it uses as much as digits as its factorization.

3020400980561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 3020400980561 in words is "three trillion, twenty billion, four hundred million, nine hundred eighty thousand, five hundred sixty-one".