84108605816 has 32 divisors (see below), whose sum is σ = 167251119840. Its totient is φ = 39516331008.

The previous prime is 84108605803. The next prime is 84108605843. The reversal of 84108605816 is 61850680148.

It is a super-2 number, since 2×84108605816² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417260 + ... + 585083.

It is an arithmetic number, because the mean of its divisors is an integer number (5226597495).

Almost surely, 2^84108605816 is an apocalyptic number.

It is an amenable number.

84108605816 is a deficient number, since it is larger than the sum of its proper divisors (83142514024).

84108605816 is a wasteful number, since it uses less digits than its factorization.

84108605816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002983 (or 1002979 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 47.

The spelling of 84108605816 in words is "eighty-four billion, one hundred eight million, six hundred five thousand, eight hundred sixteen".