83115844672 has 42 divisors (see below), whose sum is σ = 191860848942. Its totient is φ = 35621074944.

The previous prime is 83115844667. The next prime is 83115844673. The reversal of 83115844672 is 27644851138.

It can be written as a sum of positive squares in only one way, i.e., 82497626176 + 618218496 = 287224^2 + 24864^2 .

It is a super-3 number, since 3×83115844672³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (83115844673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13248753 + ... + 13255024.

It is an arithmetic number, because the mean of its divisors is an integer number (4568115451).

Almost surely, 2^83115844672 is an apocalyptic number.

It is an amenable number.

83115844672 is an abundant number, since it is smaller than the sum of its proper divisors (108745004270).

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

83115844672 is a wasteful number, since it uses less digits than its factorization.

83115844672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26503803 (or 26503786 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The spelling of 83115844672 in words is "eighty-three billion, one hundred fifteen million, eight hundred forty-four thousand, six hundred seventy-two".