20841578279180 has 12 divisors (see below), whose sum is σ = 43767314386320. Its totient is φ = 8336631311664.

The previous prime is 20841578279173. The next prime is 20841578279201. The reversal of 20841578279180 is 8197287514802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521039456960 + ... + 521039456999.

It is an arithmetic number, because the mean of its divisors is an integer number (3647276198860).

Almost surely, 2^{20841578279180} is an apocalyptic number.

20841578279180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20841578279180 is an abundant number, since it is smaller than the sum of its proper divisors (22925736107140).

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

20841578279180 is a wasteful number, since it uses less digits than its factorization.

20841578279180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042078913968 (or 1042078913966 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 62.

The spelling of 20841578279180 in words is "twenty trillion, eight hundred forty-one billion, five hundred seventy-eight million, two hundred seventy-nine thousand, one hundred eighty".