123381163584 has 84 divisors (see below), whose sum is σ = 404171245504. Its totient is φ = 35251759872.

The previous prime is 123381163583. The next prime is 123381163597. The reversal of 123381163584 is 485361183321.

It is a happy number.

123381163584 is a `hidden beast` number, since 1 + 2 + 3 + 3 + 8 + 1 + 1 + 63 + 584 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is not an unprimeable number, because it can be changed into a prime (123381163583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15296212 + ... + 15304275.

Almost surely, 2^123381163584 is an apocalyptic number.

123381163584 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123381163584 is an abundant number, since it is smaller than the sum of its proper divisors (280790081920).

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

123381163584 is a wasteful number, since it uses less digits than its factorization.

123381163584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30600512 (or 30600499 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The spelling of 123381163584 in words is "one hundred twenty-three billion, three hundred eighty-one million, one hundred sixty-three thousand, five hundred eighty-four".