20481381323392 has 32 divisors (see below), whose sum is σ = 44512092936000. Its totient is φ = 9309718782720.

The previous prime is 20481381323363. The next prime is 20481381323419. The reversal of 20481381323392 is 29332318318402.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7273216392 + ... + 7273219207.

It is an arithmetic number, because the mean of its divisors is an integer number (1391002904250).

Almost surely, 2^{20481381323392} is an apocalyptic number.

20481381323392 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20481381323392 is an abundant number, since it is smaller than the sum of its proper divisors (24030711612608).

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

20481381323392 is a wasteful number, since it uses less digits than its factorization.

20481381323392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14546435624 (or 14546435612 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 20481381323392 in words is "twenty trillion, four hundred eighty-one billion, three hundred eighty-one million, three hundred twenty-three thousand, three hundred ninety-two".