168477849540 has 1296 divisors, whose sum is σ = 726865513920. Its totient is φ = 31048012800.

The previous prime is 168477849511. The next prime is 168477849577. The reversal of 168477849540 is 45948774861.

168477849540 is a `hidden beast` number, since 1 + 6 + 8 + 4 + 7 + 7 + 84 + 9 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 1212070791 + ... + 1212070929.

It is an arithmetic number, because the mean of its divisors is an integer number (560853020).

Almost surely, 2^168477849540 is an apocalyptic number.

168477849540 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 168477849540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363432756960).

168477849540 is an abundant number, since it is smaller than the sum of its proper divisors (558387664380).

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

168477849540 is a wasteful number, since it uses less digits than its factorization.

168477849540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 168477849540 in words is "one hundred sixty-eight billion, four hundred seventy-seven million, eight hundred forty-nine thousand, five hundred forty".