77732056385 has 32 divisors (see below), whose sum is σ = 99425014272. Its totient is φ = 58137431040.

The previous prime is 77732056361. The next prime is 77732056403. The reversal of 77732056385 is 58365023777.

It is a happy number.

It is not a de Polignac number, because 77732056385 - 2¹⁰ = 77732055361 is a prime.

It is a Duffinian 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 31 ways as a sum of consecutive naturals, for example, 26923412 + ... + 26926298.

It is an arithmetic number, because the mean of its divisors is an integer number (3107031696).

Almost surely, 2^77732056385 is an apocalyptic number.

It is an amenable number.

77732056385 is a deficient number, since it is larger than the sum of its proper divisors (21692957887).

77732056385 is a wasteful number, since it uses less digits than its factorization.

77732056385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4913.

The product of its (nonzero) digits is 7408800, while the sum is 53.

The spelling of 77732056385 in words is "seventy-seven billion, seven hundred thirty-two million, fifty-six thousand, three hundred eighty-five".