77135744148 has 12 divisors (see below), whose sum is σ = 179983403040. Its totient is φ = 25711914712.

The previous prime is 77135744143. The next prime is 77135744149. The reversal of 77135744148 is 84144753177.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 77135744148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77135744143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3213989328 + ... + 3213989351.

It is an arithmetic number, because the mean of its divisors is an integer number (14998616920).

Almost surely, 2^77135744148 is an apocalyptic number.

It is an amenable number.

77135744148 is an abundant number, since it is smaller than the sum of its proper divisors (102847658892).

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

77135744148 is a wasteful number, since it uses less digits than its factorization.

77135744148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6427978686 (or 6427978684 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 51.

The spelling of 77135744148 in words is "seventy-seven billion, one hundred thirty-five million, seven hundred forty-four thousand, one hundred forty-eight".