84087258281 has 8 divisors (see below), whose sum is σ = 90571812744. Its totient is φ = 77605032960.

The previous prime is 84087258259. The next prime is 84087258317. The reversal of 84087258281 is 18285278048.

It can be written as a sum of positive squares in 4 ways, for example, as 100320256 + 83986938025 = 10016^2 + 289805^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-84087258281 is a prime.

It is a super-2 number, since 2×84087258281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84087258221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506936 + ... + 652041.

It is an arithmetic number, because the mean of its divisors is an integer number (11321476593).

Almost surely, 2^84087258281 is an apocalyptic number.

It is an amenable number.

84087258281 is a deficient number, since it is larger than the sum of its proper divisors (6484554463).

84087258281 is a wasteful number, since it uses less digits than its factorization.

84087258281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164571.

The product of its (nonzero) digits is 2293760, while the sum is 53.

The spelling of 84087258281 in words is "eighty-four billion, eighty-seven million, two hundred fifty-eight thousand, two hundred eighty-one".