168936430464 has 448 divisors, whose sum is σ = 523119068640. Its totient is φ = 54276231168.

The previous prime is 168936430423. The next prime is 168936430477. The reversal of 168936430464 is 464034639861.

It is a happy number.

168936430464 is a `hidden beast` number, since 1 + 6 + 8 + 93 + 64 + 30 + 464 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 168936430464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 576574702 + ... + 576574994.

Almost surely, 2^168936430464 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 168936430464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261559534320).

168936430464 is an abundant number, since it is smaller than the sum of its proper divisors (354182638176).

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

168936430464 is an equidigital number, since it uses as much as digits as its factorization.

168936430464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 54.

The spelling of 168936430464 in words is "one hundred sixty-eight billion, nine hundred thirty-six million, four hundred thirty thousand, four hundred sixty-four".