168365537824 has 192 divisors, whose sum is σ = 391306204800. Its totient is φ = 70496870400.

The previous prime is 168365537777. The next prime is 168365537831. The reversal of 168365537824 is 428735563861.

It is a happy number.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36306834 + ... + 36311470.

It is an arithmetic number, because the mean of its divisors is an integer number (2038053150).

Almost surely, 2^168365537824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168365537824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195653102400).

168365537824 is an abundant number, since it is smaller than the sum of its proper divisors (222940666976).

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

168365537824 is a wasteful number, since it uses less digits than its factorization.

168365537824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4827 (or 4819 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 58.

The spelling of 168365537824 in words is "one hundred sixty-eight billion, three hundred sixty-five million, five hundred thirty-seven thousand, eight hundred twenty-four".