165888817044 has 48 divisors (see below), whose sum is σ = 406985617920. Its totient is φ = 52514259840.

The previous prime is 165888817027. The next prime is 165888817067. The reversal of 165888817044 is 440718888561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3886084 + ... + 3928539.

It is an arithmetic number, because the mean of its divisors is an integer number (8478867040).

Almost surely, 2^165888817044 is an apocalyptic number.

It is an amenable number.

165888817044 is an abundant number, since it is smaller than the sum of its proper divisors (241096800876).

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

165888817044 is a wasteful number, since it uses less digits than its factorization.

165888817044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7814720 (or 7814718 counting only the distinct ones).

The product of its (nonzero) digits is 13762560, while the sum is 60.

The spelling of 165888817044 in words is "one hundred sixty-five billion, eight hundred eighty-eight million, eight hundred seventeen thousand, forty-four".