83105066879 has 4 divisors (see below), whose sum is σ = 85785875520. Its totient is φ = 80424258240.

The previous prime is 83105066873. The next prime is 83105066887. The reversal of 83105066879 is 97866050138.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83105066879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83105066879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83105066873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340404274 + ... + 1340404335.

It is an arithmetic number, because the mean of its divisors is an integer number (21446468880).

Almost surely, 2^83105066879 is an apocalyptic number.

83105066879 is a deficient number, since it is larger than the sum of its proper divisors (2680808641).

83105066879 is a wasteful number, since it uses less digits than its factorization.

83105066879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680808640.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 83105066879 in words is "eighty-three billion, one hundred five million, sixty-six thousand, eight hundred seventy-nine".