23444455421440 has 80 divisors (see below), whose sum is σ = 56220020719632. Its totient is φ = 9376401547264.

The previous prime is 23444455421437. The next prime is 23444455421501. The reversal of 23444455421440 is 4412455444432.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16806402 + ... + 18147838.

Almost surely, 2^{23444455421440} is an apocalyptic number.

23444455421440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23444455421440 is an abundant number, since it is smaller than the sum of its proper divisors (32775565298192).

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

23444455421440 is an equidigital number, since it uses as much as digits as its factorization.

23444455421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348287 (or 1348271 counting only the distinct ones).

The product of its (nonzero) digits is 4915200, while the sum is 46.

The spelling of 23444455421440 in words is "twenty-three trillion, four hundred forty-four billion, four hundred fifty-five million, four hundred twenty-one thousand, four hundred forty".