2061828445021 has 2 divisors, whose sum is σ = 2061828445022. Its totient is φ = 2061828445020.

The previous prime is 2061828444997. The next prime is 2061828445049. The reversal of 2061828445021 is 1205448281602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2030140528900 + 31687916121 = 1424830^2 + 178011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2061828445021 is a prime.

It is a super-2 number, since 2×2061828445021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2061828443021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030914222510 + 1030914222511.

It is an arithmetic number, because the mean of its divisors is an integer number (1030914222511).

Almost surely, 2^{2061828445021} is an apocalyptic number.

It is an amenable number.

2061828445021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061828445021 is an equidigital number, since it uses as much as digits as its factorization.

2061828445021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 245760, while the sum is 43.

The spelling of 2061828445021 in words is "two trillion, sixty-one billion, eight hundred twenty-eight million, four hundred forty-five thousand, twenty-one".