77344344101 has 2 divisors, whose sum is σ = 77344344102. Its totient is φ = 77344344100.

The previous prime is 77344344079. The next prime is 77344344137. The reversal of 77344344101 is 10144344377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71901741025 + 5442603076 = 268145^2 + 73774^2 .

It is an emirp because it is prime and its reverse (10144344377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77344344101 - 2⁶ = 77344344037 is a prime.

It is a super-3 number, since 3×77344344101³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77344344191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38672172050 + 38672172051.

It is an arithmetic number, because the mean of its divisors is an integer number (38672172051).

Almost surely, 2^77344344101 is an apocalyptic number.

It is an amenable number.

77344344101 is a deficient number, since it is larger than the sum of its proper divisors (1).

77344344101 is an equidigital number, since it uses as much as digits as its factorization.

77344344101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 38.

Adding to 77344344101 its reverse (10144344377), we get a palindrome (87488688478).

The spelling of 77344344101 in words is "seventy-seven billion, three hundred forty-four million, three hundred forty-four thousand, one hundred one".