181378451048008 has 64 divisors (see below), whose sum is σ = 349561402444800. Its totient is φ = 88200182845440.

The previous prime is 181378451047991. The next prime is 181378451048021. The reversal of 181378451048008 is 800840154873181.

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, 10988185 + ... + 21988567.

It is an arithmetic number, because the mean of its divisors is an integer number (5461896913200).

Almost surely, 2^{181378451048008} is an apocalyptic number.

It is an amenable number.

181378451048008 is a deficient number, since it is larger than the sum of its proper divisors (168182951396792).

181378451048008 is a wasteful number, since it uses less digits than its factorization.

181378451048008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11000822 (or 11000818 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 58.

The spelling of 181378451048008 in words is "one hundred eighty-one trillion, three hundred seventy-eight billion, four hundred fifty-one million, forty-eight thousand, eight".