84834684987 has 16 divisors (see below), whose sum is σ = 121823213568. Its totient is φ = 52201971360.

The previous prime is 84834684973. The next prime is 84834684997. The reversal of 84834684987 is 78948643848.

It is not a de Polignac number, because 84834684987 - 2⁷ = 84834684859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84834684997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 482662 + ... + 634532.

It is an arithmetic number, because the mean of its divisors is an integer number (7613950848).

Almost surely, 2^84834684987 is an apocalyptic number.

84834684987 is a deficient number, since it is larger than the sum of its proper divisors (36988528581).

84834684987 is a wasteful number, since it uses less digits than its factorization.

84834684987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166210.

The product of its digits is 297271296, while the sum is 69.

The spelling of 84834684987 in words is "eighty-four billion, eight hundred thirty-four million, six hundred eighty-four thousand, nine hundred eighty-seven".