23643564554 has 4 divisors (see below), whose sum is σ = 35465346834. Its totient is φ = 11821782276.

The previous prime is 23643564517. The next prime is 23643564569. The reversal of 23643564554 is 45546534632.

23643564554 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 12926553025 + 10717011529 = 113695^2 + 103523^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23643564499 and 23643564508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5910891137 + ... + 5910891140.

Almost surely, 2^23643564554 is an apocalyptic number.

23643564554 is a deficient number, since it is larger than the sum of its proper divisors (11821782280).

23643564554 is a wasteful number, since it uses less digits than its factorization.

23643564554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11821782279.

The product of its digits is 5184000, while the sum is 47.

The spelling of 23643564554 in words is "twenty-three billion, six hundred forty-three million, five hundred sixty-four thousand, five hundred fifty-four".