23515434555 has 48 divisors (see below), whose sum is σ = 38941392672. Its totient is φ = 12117081600.

The previous prime is 23515434539. The next prime is 23515434559. The reversal of 23515434555 is 55543451532.

It is not a de Polignac number, because 23515434555 - 2⁴ = 23515434539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23515434559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13505985 + ... + 13507725.

It is an arithmetic number, because the mean of its divisors is an integer number (811279014).

Almost surely, 2^23515434555 is an apocalyptic number.

23515434555 is a deficient number, since it is larger than the sum of its proper divisors (15425958117).

23515434555 is a wasteful number, since it uses less digits than its factorization.

23515434555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748 (or 2717 counting only the distinct ones).

The product of its digits is 900000, while the sum is 42.

The spelling of 23515434555 in words is "twenty-three billion, five hundred fifteen million, four hundred thirty-four thousand, five hundred fifty-five".