20112381408 has 96 divisors (see below), whose sum is σ = 61808866560. Its totient is φ = 5606231040.

The previous prime is 20112381371. The next prime is 20112381413. The reversal of 20112381408 is 80418321102.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 337438 + ... + 392541.

It is an arithmetic number, because the mean of its divisors is an integer number (643842360).

Almost surely, 2^20112381408 is an apocalyptic number.

20112381408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20112381408 is an abundant number, since it is smaller than the sum of its proper divisors (41696485152).

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

20112381408 is a wasteful number, since it uses less digits than its factorization.

20112381408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730040 (or 730032 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The spelling of 20112381408 in words is "twenty billion, one hundred twelve million, three hundred eighty-one thousand, four hundred eight".