83615944979 has 8 divisors (see below), whose sum is σ = 96248570880. Its totient is φ = 71155191816.

The previous prime is 83615944939. The next prime is 83615944981. The reversal of 83615944979 is 97944951638.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83615944979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83615944939) by changing a digit.

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, 42967139 + ... + 42969084.

It is an arithmetic number, because the mean of its divisors is an integer number (12031071360).

Almost surely, 2^83615944979 is an apocalyptic number.

83615944979 is a deficient number, since it is larger than the sum of its proper divisors (12632625901).

83615944979 is a wasteful number, since it uses less digits than its factorization.

83615944979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85936369.

The product of its digits is 58786560, while the sum is 65.

The spelling of 83615944979 in words is "eighty-three billion, six hundred fifteen million, nine hundred forty-four thousand, nine hundred seventy-nine".