77703127328 has 18 divisors (see below), whose sum is σ = 152981136441. Its totient is φ = 38850775232.

The previous prime is 77703127309. The next prime is 77703127357. The reversal of 77703127328 is 82372130777.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 73044791824 + 4658335504 = 270268^2 + 68252^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=197108.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1552226 + ... + 1601502.

Almost surely, 2^77703127328 is an apocalyptic number.

It is an amenable number.

77703127328 is a deficient number, since it is larger than the sum of its proper divisors (75278009113).

77703127328 is an frugal number, since it uses more digits than its factorization.

77703127328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98564 (or 49279 counting only the distinct ones).

The product of its (nonzero) digits is 691488, while the sum is 47.

The spelling of 77703127328 in words is "seventy-seven billion, seven hundred three million, one hundred twenty-seven thousand, three hundred twenty-eight".