83847485789921 has 8 divisors (see below), whose sum is σ = 95826400167744. Its totient is φ = 71868746942640.

The previous prime is 83847485789887. The next prime is 83847485789927. The reversal of 83847485789921 is 12998758474838.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83847485789921 - 2⁶ = 83847485789857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83847485789921.

It is not an unprimeable number, because it can be changed into a prime (83847485789927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42857435 + ... + 44771136.

It is an arithmetic number, because the mean of its divisors is an integer number (11978300020968).

Almost surely, 2^{83847485789921} is an apocalyptic number.

It is an amenable number.

83847485789921 is a deficient number, since it is larger than the sum of its proper divisors (11978914377823).

83847485789921 is a wasteful number, since it uses less digits than its factorization.

83847485789921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87765271.

The product of its digits is 7803371520, while the sum is 83.

The spelling of 83847485789921 in words is "eighty-three trillion, eight hundred forty-seven billion, four hundred eighty-five million, seven hundred eighty-nine thousand, nine hundred twenty-one".