83865487044 has 48 divisors (see below), whose sum is σ = 201054200256. Its totient is φ = 27192345600.

The previous prime is 83865487039. The next prime is 83865487073. The reversal of 83865487044 is 44078456838.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87102 + ... + 418709.

It is an arithmetic number, because the mean of its divisors is an integer number (4188629172).

Almost surely, 2^83865487044 is an apocalyptic number.

It is an amenable number.

83865487044 is an abundant number, since it is smaller than the sum of its proper divisors (117188713212).

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

83865487044 is a wasteful number, since it uses less digits than its factorization.

83865487044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506196 (or 506194 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 57.

The spelling of 83865487044 in words is "eighty-three billion, eight hundred sixty-five million, four hundred eighty-seven thousand, forty-four".