165043543496832 has 1920 divisors, whose sum is σ = 674079508872000. Its totient is φ = 39566646927360.

The previous prime is 165043543496813. The next prime is 165043543496861. The reversal of 165043543496832 is 238694345340561.

165043543496832 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 4 + 3 + 543 + 4 + 9 + 6 + 83 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 165043543496832.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 17653599294 + ... + 17653608642.

Almost surely, 2^{165043543496832} is an apocalyptic number.

165043543496832 is a gapful number since it is divisible by the number (12) 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 165043543496832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337039754436000).

165043543496832 is an abundant number, since it is smaller than the sum of its proper divisors (509035965375168).

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

165043543496832 is an frugal number, since it uses more digits than its factorization.

165043543496832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9428 (or 9385 counting only the distinct ones).

The product of its (nonzero) digits is 223948800, while the sum is 63.

The spelling of 165043543496832 in words is "one hundred sixty-five trillion, forty-three billion, five hundred forty-three million, four hundred ninety-six thousand, eight hundred thirty-two".