289817536820 has 24 divisors (see below), whose sum is σ = 695562088704. Its totient is φ = 99366012576.

The previous prime is 289817536807. The next prime is 289817536907. The reversal of 289817536820 is 28635718982.

It is a self number, because there is not a number n which added to its sum of digits gives 289817536820.

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, 1035062492 + ... + 1035062771.

It is an arithmetic number, because the mean of its divisors is an integer number (28981753696).

Almost surely, 2^289817536820 is an apocalyptic number.

289817536820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289817536820 is an abundant number, since it is smaller than the sum of its proper divisors (405744551884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289817536820 is a wasteful number, since it uses less digits than its factorization.

289817536820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070125279 (or 2070125277 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 59.

The spelling of 289817536820 in words is "two hundred eighty-nine billion, eight hundred seventeen million, five hundred thirty-six thousand, eight hundred twenty".