168578845545 has 16 divisors (see below), whose sum is σ = 294246712512. Its totient is φ = 81735197760.

The previous prime is 168578845499. The next prime is 168578845579. The reversal of 168578845545 is 545548875861.

It is not a de Polignac number, because 168578845545 - 2¹¹ = 168578843497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510844822 + ... + 510845151.

It is an arithmetic number, because the mean of its divisors is an integer number (18390419532).

Almost surely, 2^168578845545 is an apocalyptic number.

168578845545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168578845545 is a deficient number, since it is larger than the sum of its proper divisors (125667866967).

168578845545 is a wasteful number, since it uses less digits than its factorization.

168578845545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021689992.

The product of its digits is 215040000, while the sum is 66.

The spelling of 168578845545 in words is "one hundred sixty-eight billion, five hundred seventy-eight million, eight hundred forty-five thousand, five hundred forty-five".