23405435455503 has 4 divisors (see below), whose sum is σ = 31207247274008. Its totient is φ = 15603623637000.

The previous prime is 23405435455499. The next prime is 23405435455537. The reversal of 23405435455503 is 30555453450432.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23405435455503 - 2² = 23405435455499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23405435453503) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3900905909248 + ... + 3900905909253.

It is an arithmetic number, because the mean of its divisors is an integer number (7801811818502).

Almost surely, 2^{23405435455503} is an apocalyptic number.

23405435455503 is a deficient number, since it is larger than the sum of its proper divisors (7801811818505).

23405435455503 is an equidigital number, since it uses as much as digits as its factorization.

23405435455503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7801811818504.

The product of its (nonzero) digits is 10800000, while the sum is 48.

The spelling of 23405435455503 in words is "twenty-three trillion, four hundred five billion, four hundred thirty-five million, four hundred fifty-five thousand, five hundred three".