840288554361 has 24 divisors (see below), whose sum is σ = 1224738078720. Its totient is φ = 555123010176.

The previous prime is 840288554327. The next prime is 840288554377. The reversal of 840288554361 is 163455882048.

840288554361 is a `hidden beast` number, since 8 + 4 + 0 + 2 + 88 + 554 + 3 + 6 + 1 = 666.

It is not a de Polignac number, because 840288554361 - 2⁹ = 840288553849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 840288554298 and 840288554307.

It is not an unprimeable number, because it can be changed into a prime (840288554321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5125320 + ... + 5286726.

It is an arithmetic number, because the mean of its divisors is an integer number (51030753280).

Almost surely, 2^840288554361 is an apocalyptic number.

It is an amenable number.

840288554361 is a deficient number, since it is larger than the sum of its proper divisors (384449524359).

840288554361 is a wasteful number, since it uses less digits than its factorization.

840288554361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166645 (or 166642 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 54.

The spelling of 840288554361 in words is "eight hundred forty billion, two hundred eighty-eight million, five hundred fifty-four thousand, three hundred sixty-one".