442452077777 has 2 divisors, whose sum is σ = 442452077778. Its totient is φ = 442452077776.

The previous prime is 442452077773. The next prime is 442452077833. The reversal of 442452077777 is 777770254244.

It is a happy number.

It is an a-pointer prime, because the next prime (442452077833) can be obtained adding 442452077777 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418355414416 + 24096663361 = 646804^2 + 155231^2 .

It is a cyclic number.

It is not a de Polignac number, because 442452077777 - 2² = 442452077773 is a prime.

It is a super-2 number, since 2×442452077777² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442452077773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221226038888 + 221226038889.

It is an arithmetic number, because the mean of its divisors is an integer number (221226038889).

Almost surely, 2^442452077777 is an apocalyptic number.

It is an amenable number.

442452077777 is a deficient number, since it is larger than the sum of its proper divisors (1).

442452077777 is an equidigital number, since it uses as much as digits as its factorization.

442452077777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21512960, while the sum is 56.

The spelling of 442452077777 in words is "four hundred forty-two billion, four hundred fifty-two million, seventy-seven thousand, seven hundred seventy-seven".