77743916352 has 84 divisors (see below), whose sum is σ = 226492098196. Its totient is φ = 25489797120.

The previous prime is 77743916297. The next prime is 77743916377. The reversal of 77743916352 is 25361934777.

It can be written as a sum of positive squares in 2 ways, for example, as 8982490176 + 68761426176 = 94776^2 + 262224^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1071193 + ... + 1141464.

Almost surely, 2^77743916352 is an apocalyptic number.

77743916352 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

77743916352 is an abundant number, since it is smaller than the sum of its proper divisors (148748181844).

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

77743916352 is a wasteful number, since it uses less digits than its factorization.

77743916352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212736 (or 2212723 counting only the distinct ones).

The product of its digits is 6667920, while the sum is 54.

It can be divided in two parts, 777 and 43916352, that added together give a square (43917129 = 6627²).

The spelling of 77743916352 in words is "seventy-seven billion, seven hundred forty-three million, nine hundred sixteen thousand, three hundred fifty-two".