165113554326600 has 384 divisors, whose sum is σ = 566746761600000. Its totient is φ = 39432032640000.

The previous prime is 165113554326571. The next prime is 165113554326613. The reversal of 165113554326600 is 6623455311561.

It is a self number, because there is not a number n which added to its sum of digits gives 165113554326600.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 132031051 + ... + 133275749.

It is an arithmetic number, because the mean of its divisors is an integer number (1475903025000).

Almost surely, 2^{165113554326600} is an apocalyptic number.

165113554326600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165113554326600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283373380800000).

165113554326600 is an abundant number, since it is smaller than the sum of its proper divisors (401633207273400).

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

165113554326600 is a wasteful number, since it uses less digits than its factorization.

165113554326600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245029 (or 1245020 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 165113554326600 in words is "one hundred sixty-five trillion, one hundred thirteen billion, five hundred fifty-four million, three hundred twenty-six thousand, six hundred".