23403520155455 has 96 divisors (see below), whose sum is σ = 33351295864320. Its totient is φ = 15615119520000.

The previous prime is 23403520155377. The next prime is 23403520155469. The reversal of 23403520155455 is 55455102530432.

It is not a de Polignac number, because 23403520155455 - 2⁴⁴ = 5811334111039 is a prime.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 127315160 + ... + 127498850.

It is an arithmetic number, because the mean of its divisors is an integer number (347409331920).

Almost surely, 2^{23403520155455} is an apocalyptic number.

23403520155455 is a deficient number, since it is larger than the sum of its proper divisors (9947775708865).

23403520155455 is a wasteful number, since it uses less digits than its factorization.

23403520155455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183933 (or 183910 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 44.

Adding to 23403520155455 its reverse (55455102530432), we get a palindrome (78858622685887).

The spelling of 23403520155455 in words is "twenty-three trillion, four hundred three billion, five hundred twenty million, one hundred fifty-five thousand, four hundred fifty-five".