2128072637441 has 2 divisors, whose sum is σ = 2128072637442. Its totient is φ = 2128072637440.

The previous prime is 2128072637363. The next prime is 2128072637531. The reversal of 2128072637441 is 1447362708212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1358847164416 + 769225473025 = 1165696^2 + 877055^2 .

It is a cyclic number.

It is not a de Polignac number, because 2128072637441 - 2¹⁴ = 2128072621057 is a prime.

It is not a weakly prime, because it can be changed into another prime (2128072637941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064036318720 + 1064036318721.

It is an arithmetic number, because the mean of its divisors is an integer number (1064036318721).

Almost surely, 2^{2128072637441} is an apocalyptic number.

It is an amenable number.

2128072637441 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128072637441 is an equidigital number, since it uses as much as digits as its factorization.

2128072637441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 47.

The spelling of 2128072637441 in words is "two trillion, one hundred twenty-eight billion, seventy-two million, six hundred thirty-seven thousand, four hundred forty-one".