61000038773 has 2 divisors, whose sum is σ = 61000038774. Its totient is φ = 61000038772.

The previous prime is 61000038727. The next prime is 61000038851. The reversal of 61000038773 is 37783000016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34201693969 + 26798344804 = 184937^2 + 163702^2 .

It is a cyclic number.

It is not a de Polignac number, because 61000038773 - 2³⁰ = 59926296949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61000038373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30500019386 + 30500019387.

It is an arithmetic number, because the mean of its divisors is an integer number (30500019387).

Almost surely, 2^61000038773 is an apocalyptic number.

It is an amenable number.

61000038773 is a deficient number, since it is larger than the sum of its proper divisors (1).

61000038773 is an equidigital number, since it uses as much as digits as its factorization.

61000038773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

Adding to 61000038773 its reverse (37783000016), we get a palindrome (98783038789).

The spelling of 61000038773 in words is "sixty-one billion, thirty-eight thousand, seven hundred seventy-three".