165588746880 has 128 divisors (see below), whose sum is σ = 544840588800. Its totient is φ = 42732564480.

The previous prime is 165588746839. The next prime is 165588746899. The reversal of 165588746880 is 88647885561.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1331515 + ... + 1450554.

It is an arithmetic number, because the mean of its divisors is an integer number (4256567100).

Almost surely, 2^165588746880 is an apocalyptic number.

165588746880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165588746880 is an abundant number, since it is smaller than the sum of its proper divisors (379251841920).

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

165588746880 is a wasteful number, since it uses less digits than its factorization.

165588746880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782122 (or 2782110 counting only the distinct ones).

The product of its (nonzero) digits is 103219200, while the sum is 66.

The spelling of 165588746880 in words is "one hundred sixty-five billion, five hundred eighty-eight million, seven hundred forty-six thousand, eight hundred eighty".