23121744984 has 96 divisors (see below), whose sum is σ = 67469613120. Its totient is φ = 7111093248.

The previous prime is 23121744949. The next prime is 23121745013. The reversal of 23121744984 is 48944712132.

23121744984 is a `hidden beast` number, since 2 + 3 + 121 + 7 + 449 + 84 = 666.

It is a super-2 number, since 2×23121744984² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2707329 + ... + 2715855.

It is an arithmetic number, because the mean of its divisors is an integer number (702808470).

Almost surely, 2^23121744984 is an apocalyptic number.

23121744984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23121744984 is an abundant number, since it is smaller than the sum of its proper divisors (44347868136).

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

23121744984 is a wasteful number, since it uses less digits than its factorization.

23121744984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11449 (or 11442 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The spelling of 23121744984 in words is "twenty-three billion, one hundred twenty-one million, seven hundred forty-four thousand, nine hundred eighty-four".