83779648385 has 8 divisors (see below), whose sum is σ = 100768841856. Its totient is φ = 66868209520.

The previous prime is 83779648357. The next prime is 83779648409. The reversal of 83779648385 is 58384697738.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83779648385 - 2³⁶ = 15060171649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19436279 + ... + 19440588.

It is an arithmetic number, because the mean of its divisors is an integer number (12596105232).

Almost surely, 2^83779648385 is an apocalyptic number.

It is an amenable number.

83779648385 is a deficient number, since it is larger than the sum of its proper divisors (16989193471).

83779648385 is a wasteful number, since it uses less digits than its factorization.

83779648385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38877303.

The product of its digits is 243855360, while the sum is 68.

The spelling of 83779648385 in words is "eighty-three billion, seven hundred seventy-nine million, six hundred forty-eight thousand, three hundred eighty-five".