445671807077773 has 2 divisors, whose sum is σ = 445671807077774. Its totient is φ = 445671807077772.

The previous prime is 445671807077753. The next prime is 445671807077807. The reversal of 445671807077773 is 377770708176544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297339430322089 + 148332376755684 = 17243533^2 + 12179178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445671807077773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 445671807077696 and 445671807077705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445671807077753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222835903538886 + 222835903538887.

It is an arithmetic number, because the mean of its divisors is an integer number (222835903538887).

Almost surely, 2^{445671807077773} is an apocalyptic number.

It is an amenable number.

445671807077773 is a deficient number, since it is larger than the sum of its proper divisors (1).

445671807077773 is an equidigital number, since it uses as much as digits as its factorization.

445671807077773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1355316480, while the sum is 73.

The spelling of 445671807077773 in words is "four hundred forty-five trillion, six hundred seventy-one billion, eight hundred seven million, seventy-seven thousand, seven hundred seventy-three".