165519703828 has 12 divisors (see below), whose sum is σ = 291176024832. Its totient is φ = 82326553880.

The previous prime is 165519703807. The next prime is 165519703841. The reversal of 165519703828 is 828307915561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108323650 + ... + 108325177.

It is an arithmetic number, because the mean of its divisors is an integer number (24264668736).

Almost surely, 2^165519703828 is an apocalyptic number.

It is an amenable number.

165519703828 is a deficient number, since it is larger than the sum of its proper divisors (125656321004).

165519703828 is a wasteful number, since it uses less digits than its factorization.

165519703828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216649022 (or 216649020 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 55.

The spelling of 165519703828 in words is "one hundred sixty-five billion, five hundred nineteen million, seven hundred three thousand, eight hundred twenty-eight".