77416161 has 4 divisors (see below), whose sum is σ = 103221552. Its totient is φ = 51610772.

The previous prime is 77416151. The next prime is 77416169. The reversal of 77416161 is 16161477.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16161477 = 3 ⋅5387159.

It is a cyclic number.

It is not a de Polignac number, because 77416161 - 2⁷ = 77416033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77416169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12902691 + ... + 12902696.

It is an arithmetic number, because the mean of its divisors is an integer number (25805388).

Almost surely, 2^77416161 is an apocalyptic number.

It is an amenable number.

77416161 is a deficient number, since it is larger than the sum of its proper divisors (25805391).

77416161 is a wasteful number, since it uses less digits than its factorization.

77416161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25805390.

The product of its digits is 7056, while the sum is 33.

The square root of 77416161 is about 8798.6454071067. The cubic root of 77416161 is about 426.1971524566.

It can be divided in two parts, 77416 and 161, that added together give a palindrome (77577).

The spelling of 77416161 in words is "seventy-seven million, four hundred sixteen thousand, one hundred sixty-one".