8036643773 has 2 divisors, whose sum is σ = 8036643774. Its totient is φ = 8036643772.

The previous prime is 8036643761. The next prime is 8036643809. The reversal of 8036643773 is 3773466308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8031385924 + 5257849 = 89618^2 + 2293^2 .

It is a cyclic number.

It is not a de Polignac number, because 8036643773 - 2⁴ = 8036643757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8036643743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4018321886 + 4018321887.

It is an arithmetic number, because the mean of its divisors is an integer number (4018321887).

Almost surely, 2^8036643773 is an apocalyptic number.

It is an amenable number.

8036643773 is a deficient number, since it is larger than the sum of its proper divisors (1).

8036643773 is an equidigital number, since it uses as much as digits as its factorization.

8036643773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 47.

The square root of 8036643773 is about 89647.3299825488. The cubic root of 8036643773 is about 2003.0489971960.

The spelling of 8036643773 in words is "eight billion, thirty-six million, six hundred forty-three thousand, seven hundred seventy-three".