83844372912 has 80 divisors (see below), whose sum is σ = 229467313152. Its totient is φ = 26289402880.

The previous prime is 83844372881. The next prime is 83844372919. The reversal of 83844372912 is 21927344838.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (83844372919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479337 + ... + 1534967.

Almost surely, 2^83844372912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83844372912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114733656576).

83844372912 is an abundant number, since it is smaller than the sum of its proper divisors (145622940240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83844372912 is a wasteful number, since it uses less digits than its factorization.

83844372912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57506 (or 57500 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The spelling of 83844372912 in words is "eighty-three billion, eight hundred forty-four million, three hundred seventy-two thousand, nine hundred twelve".