23448721645440 has 384 divisors, whose sum is σ = 99657069220800. Its totient is φ = 4947422478336.

The previous prime is 23448721645439. The next prime is 23448721645441. The reversal of 23448721645440 is 4454612784432.

23448721645440 is a `hidden beast` number, since 2 + 3 + 4 + 4 + 87 + 2 + 16 + 4 + 544 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (23448721645439) and next prime (23448721645441).

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23448721645441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21843745 + ... + 22892064.

Almost surely, 2^{23448721645440} is an apocalyptic number.

23448721645440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23448721645440 is an abundant number, since it is smaller than the sum of its proper divisors (76208347575360).

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

23448721645440 is a wasteful number, since it uses less digits than its factorization.

23448721645440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44735854 (or 44735839 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 54.

The spelling of 23448721645440 in words is "twenty-three trillion, four hundred forty-eight billion, seven hundred twenty-one million, six hundred forty-five thousand, four hundred forty".