2445074707681 has 2 divisors, whose sum is σ = 2445074707682. Its totient is φ = 2445074707680.

The previous prime is 2445074707679. The next prime is 2445074707727. The reversal of 2445074707681 is 1867074705442.

2445074707681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2202971346081 + 242103361600 = 1484241^2 + 492040^2 .

It is a cyclic number.

It is not a de Polignac number, because 2445074707681 - 2¹ = 2445074707679 is a prime.

It is a super-2 number, since 2×2445074707681² (a number of 26 digits) contains 22 as substring.

Together with 2445074707679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2445074707601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222537353840 + 1222537353841.

It is an arithmetic number, because the mean of its divisors is an integer number (1222537353841).

Almost surely, 2^{2445074707681} is an apocalyptic number.

It is an amenable number.

2445074707681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2445074707681 is an equidigital number, since it uses as much as digits as its factorization.

2445074707681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10536960, while the sum is 55.

The spelling of 2445074707681 in words is "two trillion, four hundred forty-five billion, seventy-four million, seven hundred seven thousand, six hundred eighty-one".