77316159 has 4 divisors (see below), whose sum is σ = 103088216. Its totient is φ = 51544104.

The previous prime is 77316143. The next prime is 77316163. The reversal of 77316159 is 95161377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95161377 = 3 ⋅31720459.

It is not a de Polignac number, because 77316159 - 2⁴ = 77316143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77316859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12886024 + ... + 12886029.

It is an arithmetic number, because the mean of its divisors is an integer number (25772054).

Almost surely, 2^77316159 is an apocalyptic number.

77316159 is a deficient number, since it is larger than the sum of its proper divisors (25772057).

77316159 is a wasteful number, since it uses less digits than its factorization.

77316159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25772056.

The product of its digits is 39690, while the sum is 39.

The square root of 77316159 is about 8792.9607641567. The cubic root of 77316159 is about 426.0135605902.

The spelling of 77316159 in words is "seventy-seven million, three hundred sixteen thousand, one hundred fifty-nine".