83128277123 has 4 divisors (see below), whose sum is σ = 83128978608. Its totient is φ = 83127575640.

The previous prime is 83128277119. The next prime is 83128277143. The reversal of 83128277123 is 32177282138.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 83128277123 - 2² = 83128277119 is a prime.

It is a super-3 number, since 3×83128277123³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83128277143) 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, 124223 + ... + 426248.

It is an arithmetic number, because the mean of its divisors is an integer number (20782244652).

Almost surely, 2^83128277123 is an apocalyptic number.

83128277123 is a deficient number, since it is larger than the sum of its proper divisors (701485).

83128277123 is a wasteful number, since it uses less digits than its factorization.

83128277123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701484.

The product of its digits is 225792, while the sum is 44.

The spelling of 83128277123 in words is "eighty-three billion, one hundred twenty-eight million, two hundred seventy-seven thousand, one hundred twenty-three".