84479566881 has 32 divisors (see below), whose sum is σ = 121854523392. Its totient is φ = 51923738240.

The previous prime is 84479566817. The next prime is 84479566901. The reversal of 84479566881 is 18866597448.

It is not a de Polignac number, because 84479566881 - 2⁶ = 84479566817 is a prime.

It is a super-2 number, since 2×84479566881² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84479564881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54916 + ... + 414698.

It is an arithmetic number, because the mean of its divisors is an integer number (3807953856).

Almost surely, 2^84479566881 is an apocalyptic number.

It is an amenable number.

84479566881 is a deficient number, since it is larger than the sum of its proper divisors (37374956511).

84479566881 is a wasteful number, since it uses less digits than its factorization.

84479566881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359933.

The product of its digits is 92897280, while the sum is 66.

The spelling of 84479566881 in words is "eighty-four billion, four hundred seventy-nine million, five hundred sixty-six thousand, eight hundred eighty-one".