84815043987 has 16 divisors (see below), whose sum is σ = 114219123200. Its totient is φ = 55977495552.

The previous prime is 84815043947. The next prime is 84815044003. The reversal of 84815043987 is 78934051848.

It is not a de Polignac number, because 84815043987 - 2¹⁴ = 84815027603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84815043947) 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, 1028514 + ... + 1107912.

It is an arithmetic number, because the mean of its divisors is an integer number (7138695200).

Almost surely, 2^84815043987 is an apocalyptic number.

84815043987 is a deficient number, since it is larger than the sum of its proper divisors (29404079213).

84815043987 is a wasteful number, since it uses less digits than its factorization.

84815043987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82962.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 84815043987 in words is "eighty-four billion, eight hundred fifteen million, forty-three thousand, nine hundred eighty-seven".