42776799137 has 2 divisors, whose sum is σ = 42776799138. Its totient is φ = 42776799136.

The previous prime is 42776799071. The next prime is 42776799187. The reversal of 42776799137 is 73199767724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42607565056 + 169234081 = 206416^2 + 13009^2 .

It is a cyclic number.

It is not a de Polignac number, because 42776799137 - 2¹⁴ = 42776782753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42776799137.

It is not a weakly prime, because it can be changed into another prime (42776799187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21388399568 + 21388399569.

It is an arithmetic number, because the mean of its divisors is an integer number (21388399569).

Almost surely, 2^42776799137 is an apocalyptic number.

It is an amenable number.

42776799137 is a deficient number, since it is larger than the sum of its proper divisors (1).

42776799137 is an equidigital number, since it uses as much as digits as its factorization.

42776799137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28005264, while the sum is 62.

The spelling of 42776799137 in words is "forty-two billion, seven hundred seventy-six million, seven hundred ninety-nine thousand, one hundred thirty-seven".