168266606238720 has 1760 divisors, whose sum is σ = 685695264122880. Its totient is φ = 39094413557760.

The previous prime is 168266606238719. The next prime is 168266606238727. The reversal of 168266606238720 is 27832606662861.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1760).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168266606238727) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 11308992241 + ... + 11309007119.

It is an arithmetic number, because the mean of its divisors is an integer number (389599581888).

Almost surely, 2^{168266606238720} is an apocalyptic number.

168266606238720 is a gapful number since it is divisible by the number (10) 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 168266606238720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342847632061440).

168266606238720 is an abundant number, since it is smaller than the sum of its proper divisors (517428657884160).

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

168266606238720 is a wasteful number, since it uses less digits than its factorization.

168266606238720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15031 (or 15004 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 63.

The spelling of 168266606238720 in words is "one hundred sixty-eight trillion, two hundred sixty-six billion, six hundred six million, two hundred thirty-eight thousand, seven hundred twenty".