168901416640 has 56 divisors (see below), whose sum is σ = 438759825552. Its totient is φ = 61418695680.

The previous prime is 168901416613. The next prime is 168901416647. The reversal of 168901416640 is 46614109861.

It is not an unprimeable number, because it can be changed into a prime (168901416647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23988159 + ... + 23995198.

Almost surely, 2^168901416640 is an apocalyptic number.

168901416640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168901416640 is an abundant number, since it is smaller than the sum of its proper divisors (269858408912).

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

168901416640 is a wasteful number, since it uses less digits than its factorization.

168901416640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47983385 (or 47983375 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 168901416640 in words is "one hundred sixty-eight billion, nine hundred one million, four hundred sixteen thousand, six hundred forty".