168945515424 has 120 divisors (see below), whose sum is σ = 567844710048. Its totient is φ = 48270142080.

The previous prime is 168945515399. The next prime is 168945515443. The reversal of 168945515424 is 424515549861.

It is a happy number.

168945515424 is a `hidden beast` number, since 1 + 6 + 8 + 9 + 45 + 51 + 542 + 4 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4637542 + ... + 4673829.

Almost surely, 2^168945515424 is an apocalyptic number.

168945515424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

168945515424 is an abundant number, since it is smaller than the sum of its proper divisors (398899194624).

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

168945515424 is an equidigital number, since it uses as much as digits as its factorization.

168945515424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9311400 (or 9311383 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 54.

The spelling of 168945515424 in words is "one hundred sixty-eight billion, nine hundred forty-five million, five hundred fifteen thousand, four hundred twenty-four".