23355453213440 has 36 divisors (see below), whose sum is σ = 55943609028384. Its totient is φ = 9342181284864.

The previous prime is 23355453213437. The next prime is 23355453213497. The reversal of 23355453213440 is 4431235455332.

It is a junction number, because it is equal to n+sod(n) for n = 23355453213391 and 23355453213400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9123222632 + ... + 9123225191.

Almost surely, 2^{23355453213440} is an apocalyptic number.

23355453213440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23355453213440 is an abundant number, since it is smaller than the sum of its proper divisors (32588155814944).

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

23355453213440 is an equidigital number, since it uses as much as digits as its factorization.

23355453213440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18246447844 (or 18246447830 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 44.

Adding to 23355453213440 its reverse (4431235455332), we get a palindrome (27786688668772).

The spelling of 23355453213440 in words is "twenty-three trillion, three hundred fifty-five billion, four hundred fifty-three million, two hundred thirteen thousand, four hundred forty".