23660043440 has 40 divisors (see below), whose sum is σ = 60010476048. Its totient is φ = 8603651840.

The previous prime is 23660043419. The next prime is 23660043481. The reversal of 23660043440 is 4434006632.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 23660043397 and 23660043406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13442327 + ... + 13444086.

Almost surely, 2^23660043440 is an apocalyptic number.

23660043440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23660043440 is an abundant number, since it is smaller than the sum of its proper divisors (36350432608).

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

23660043440 is a wasteful number, since it uses less digits than its factorization.

23660043440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26886437 (or 26886431 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

The spelling of 23660043440 in words is "twenty-three billion, six hundred sixty million, forty-three thousand, four hundred forty".