20381160331388 has 12 divisors (see below), whose sum is σ = 35668044065472. Its totient is φ = 10190290598400.

The previous prime is 20381160331387. The next prime is 20381160331391. The reversal of 20381160331388 is 88313306118302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20381160331387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72233420 + ... + 72515027.

It is an arithmetic number, because the mean of its divisors is an integer number (2972337005456).

Almost surely, 2^{20381160331388} is an apocalyptic number.

It is an amenable number.

20381160331388 is a deficient number, since it is larger than the sum of its proper divisors (15286883734084).

20381160331388 is a wasteful number, since it uses less digits than its factorization.

20381160331388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144783652 (or 144783650 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 20381160331388 in words is "twenty trillion, three hundred eighty-one billion, one hundred sixty million, three hundred thirty-one thousand, three hundred eighty-eight".