2251073760641 has 2 divisors, whose sum is σ = 2251073760642. Its totient is φ = 2251073760640.

The previous prime is 2251073760601. The next prime is 2251073760697. The reversal of 2251073760641 is 1460673701522.

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., 1318489545025 + 932584215616 = 1148255^2 + 965704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2251073760641 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2251073760592 and 2251073760601.

It is not a weakly prime, because it can be changed into another prime (2251073760601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125536880320 + 1125536880321.

It is an arithmetic number, because the mean of its divisors is an integer number (1125536880321).

Almost surely, 2^{2251073760641} is an apocalyptic number.

It is an amenable number.

2251073760641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251073760641 is an equidigital number, since it uses as much as digits as its factorization.

2251073760641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 2251073760641 in words is "two trillion, two hundred fifty-one billion, seventy-three million, seven hundred sixty thousand, six hundred forty-one".