83139228999 has 12 divisors (see below), whose sum is σ = 120101615400. Its totient is φ = 55420790544.

The previous prime is 83139228979. The next prime is 83139229009. The reversal of 83139228999 is 99982293138.

83139228999 is a `hidden beast` number, since 8 + 313 + 9 + 228 + 9 + 99 = 666.

It is not a de Polignac number, because 83139228999 - 2¹⁶ = 83139163463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83139228959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 347484 + ... + 535745.

It is an arithmetic number, because the mean of its divisors is an integer number (10008467950).

Almost surely, 2^83139228999 is an apocalyptic number.

83139228999 is a deficient number, since it is larger than the sum of its proper divisors (36962386401).

83139228999 is a wasteful number, since it uses less digits than its factorization.

83139228999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893694 (or 893691 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 63.

The spelling of 83139228999 in words is "eighty-three billion, one hundred thirty-nine million, two hundred twenty-eight thousand, nine hundred ninety-nine".