168236480544 has 48 divisors (see below), whose sum is σ = 481768106400. Its totient is φ = 50980751360.

The previous prime is 168236480543. The next prime is 168236480563. The reversal of 168236480544 is 445084632861.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (168236480543) 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, 79656369 + ... + 79658480.

It is an arithmetic number, because the mean of its divisors is an integer number (10036835550).

Almost surely, 2^168236480544 is an apocalyptic number.

It is an amenable number.

168236480544 is an abundant number, since it is smaller than the sum of its proper divisors (313531625856).

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

168236480544 is a wasteful number, since it uses less digits than its factorization.

168236480544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159314873 (or 159314865 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 51.

The spelling of 168236480544 in words is "one hundred sixty-eight billion, two hundred thirty-six million, four hundred eighty thousand, five hundred forty-four".