168806497392 has 240 divisors, whose sum is σ = 528927028448. Its totient is φ = 51810554880.

The previous prime is 168806497357. The next prime is 168806497403. The reversal of 168806497392 is 293794608861.

168806497392 is a `hidden beast` number, since 1 + 68 + 80 + 6 + 497 + 3 + 9 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21275058 + ... + 21282990.

Almost surely, 2^168806497392 is an apocalyptic number.

168806497392 is a gapful number since it is divisible by the number (12) 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 168806497392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264463514224).

168806497392 is an abundant number, since it is smaller than the sum of its proper divisors (360120531056).

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

168806497392 is a wasteful number, since it uses less digits than its factorization.

168806497392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8390 (or 8372 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 168806497392 in words is "one hundred sixty-eight billion, eight hundred six million, four hundred ninety-seven thousand, three hundred ninety-two".