168864437040 has 80 divisors (see below), whose sum is σ = 563747438688. Its totient is φ = 41566629888.

The previous prime is 168864436969. The next prime is 168864437057. The reversal of 168864437040 is 40734468861.

168864437040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×168864437040² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27058489 + ... + 27064728.

Almost surely, 2^168864437040 is an apocalyptic number.

168864437040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168864437040 is an abundant number, since it is smaller than the sum of its proper divisors (394883001648).

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

168864437040 is a wasteful number, since it uses less digits than its factorization.

168864437040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54123246 (or 54123240 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 51.

The spelling of 168864437040 in words is "one hundred sixty-eight billion, eight hundred sixty-four million, four hundred thirty-seven thousand, forty".