165282218025840 has 120 divisors (see below), whose sum is σ = 566882841515328. Its totient is φ = 43137486681600.

The previous prime is 165282218025823. The next prime is 165282218025871. The reversal of 165282218025840 is 48520812282561.

165282218025840 is a `hidden beast` number, since 1 + 6 + 5 + 28 + 22 + 18 + 0 + 2 + 584 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2442079311 + ... + 2442146990.

Almost surely, 2^{165282218025840} is an apocalyptic number.

165282218025840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165282218025840 is an abundant number, since it is smaller than the sum of its proper divisors (401600623489488).

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

165282218025840 is a wasteful number, since it uses less digits than its factorization.

165282218025840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884226367 (or 4884226358 counting only the distinct ones).

The product of its (nonzero) digits is 4915200, while the sum is 54.

The spelling of 165282218025840 in words is "one hundred sixty-five trillion, two hundred eighty-two billion, two hundred eighteen million, twenty-five thousand, eight hundred forty".