42877877773 has 2 divisors, whose sum is σ = 42877877774. Its totient is φ = 42877877772.

The previous prime is 42877877767. The next prime is 42877877851. The reversal of 42877877773 is 37777877824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34558066404 + 8319811369 = 185898^2 + 91213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42877877773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42877877699 and 42877877708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42877877473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21438938886 + 21438938887.

It is an arithmetic number, because the mean of its divisors is an integer number (21438938887).

Almost surely, 2^42877877773 is an apocalyptic number.

It is an amenable number.

42877877773 is a deficient number, since it is larger than the sum of its proper divisors (1).

42877877773 is an equidigital number, since it uses as much as digits as its factorization.

42877877773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180708864, while the sum is 67.

The spelling of 42877877773 in words is "forty-two billion, eight hundred seventy-seven million, eight hundred seventy-seven thousand, seven hundred seventy-three".