165416566552 has 32 divisors (see below), whose sum is σ = 316909713600. Its totient is φ = 80909027584.

The previous prime is 165416566519. The next prime is 165416566619. The reversal of 165416566552 is 255665614561.

It is a self number, because there is not a number n which added to its sum of digits gives 165416566552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671628 + ... + 884260.

It is an arithmetic number, because the mean of its divisors is an integer number (9903428550).

Almost surely, 2^165416566552 is an apocalyptic number.

It is an amenable number.

165416566552 is a deficient number, since it is larger than the sum of its proper divisors (151493147048).

165416566552 is a wasteful number, since it uses less digits than its factorization.

165416566552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214755 (or 214751 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 52.

The spelling of 165416566552 in words is "one hundred sixty-five billion, four hundred sixteen million, five hundred sixty-six thousand, five hundred fifty-two".