42476797777 has 2 divisors, whose sum is σ = 42476797778. Its totient is φ = 42476797776.

The previous prime is 42476797763. The next prime is 42476797813. The reversal of 42476797777 is 77779767424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22188783681 + 20288014096 = 148959^2 + 142436^2 .

It is a cyclic number.

It is not a de Polignac number, because 42476797777 - 2¹¹ = 42476795729 is a prime.

It is not a weakly prime, because it can be changed into another prime (42476797177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21238398888 + 21238398889.

It is an arithmetic number, because the mean of its divisors is an integer number (21238398889).

Almost surely, 2^42476797777 is an apocalyptic number.

It is an amenable number.

42476797777 is a deficient number, since it is larger than the sum of its proper divisors (1).

42476797777 is an equidigital number, since it uses as much as digits as its factorization.

42476797777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 203297472, while the sum is 67.

The spelling of 42476797777 in words is "forty-two billion, four hundred seventy-six million, seven hundred ninety-seven thousand, seven hundred seventy-seven".