42796066777 has 2 divisors, whose sum is σ = 42796066778. Its totient is φ = 42796066776.

The previous prime is 42796066763. The next prime is 42796066837. The reversal of 42796066777 is 77766069724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40155751321 + 2640315456 = 200389^2 + 51384^2 .

It is a cyclic number.

It is not a de Polignac number, because 42796066777 - 2³⁵ = 8436328409 is a prime.

It is not a weakly prime, because it can be changed into another prime (42796066727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21398033388 + 21398033389.

It is an arithmetic number, because the mean of its divisors is an integer number (21398033389).

Almost surely, 2^42796066777 is an apocalyptic number.

It is an amenable number.

42796066777 is a deficient number, since it is larger than the sum of its proper divisors (1).

42796066777 is an equidigital number, since it uses as much as digits as its factorization.

42796066777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37340352, while the sum is 61.

The spelling of 42796066777 in words is "forty-two billion, seven hundred ninety-six million, sixty-six thousand, seven hundred seventy-seven".