77013161 has 2 divisors, whose sum is σ = 77013162. Its totient is φ = 77013160.

The previous prime is 77013151. The next prime is 77013163. The reversal of 77013161 is 16131077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69889600 + 7123561 = 8360^2 + 2669^2 .

It is a cyclic number.

It is not a de Polignac number, because 77013161 - 2²² = 72818857 is a prime.

Together with 77013163, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77013161.

It is not a weakly prime, because it can be changed into another prime (77013163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38506580 + 38506581.

It is an arithmetic number, because the mean of its divisors is an integer number (38506581).

Almost surely, 2^77013161 is an apocalyptic number.

It is an amenable number.

77013161 is a deficient number, since it is larger than the sum of its proper divisors (1).

77013161 is an equidigital number, since it uses as much as digits as its factorization.

77013161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 77013161 is about 8775.7142729239. The cubic root of 77013161 is about 425.4563237094.

It can be divided in two parts, 770 and 13161, that added together give a palindrome (13931).

The spelling of 77013161 in words is "seventy-seven million, thirteen thousand, one hundred sixty-one".