77134443168 has 48 divisors (see below), whose sum is σ = 205329733056. Its totient is φ = 25349345280.

The previous prime is 77134443161. The next prime is 77134443181. The reversal of 77134443168 is 86134443177.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (77134443161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5651521 + ... + 5665152.

It is an arithmetic number, because the mean of its divisors is an integer number (4277702772).

Almost surely, 2^77134443168 is an apocalyptic number.

It is an amenable number.

77134443168 is an abundant number, since it is smaller than the sum of its proper divisors (128195289888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77134443168 is a wasteful number, since it uses less digits than its factorization.

77134443168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11316757 (or 11316749 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 48.

Subtracting 77134443168 from its reverse (86134443177), we obtain a palindrome (9000000009).

The spelling of 77134443168 in words is "seventy-seven billion, one hundred thirty-four million, four hundred forty-three thousand, one hundred sixty-eight".