23121612544140 has 72 divisors (see below), whose sum is σ = 76511517879888. Its totient is φ = 5605239404160.

The previous prime is 23121612544109. The next prime is 23121612544157. The reversal of 23121612544140 is 4144521612132.

23121612544140 is a `hidden beast` number, since 2 + 3 + 1 + 21 + 612 + 5 + 4 + 4 + 14 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23121612544095 and 23121612544104.

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, 5838789067 + ... + 5838793026.

It is an arithmetic number, because the mean of its divisors is an integer number (1062659970554).

Almost surely, 2^{23121612544140} is an apocalyptic number.

23121612544140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23121612544140 is an abundant number, since it is smaller than the sum of its proper divisors (53389905335748).

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

23121612544140 is a wasteful number, since it uses less digits than its factorization.

23121612544140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11677582119 (or 11677582114 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 23121612544140 in words is "twenty-three trillion, one hundred twenty-one billion, six hundred twelve million, five hundred forty-four thousand, one hundred forty".