23557728211 has 16 divisors (see below), whose sum is σ = 24117425280. Its totient is φ = 23003830080.

The previous prime is 23557728203. The next prime is 23557728281. The reversal of 23557728211 is 11282775532.

It is a cyclic number.

It is not a de Polignac number, because 23557728211 - 2³ = 23557728203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23557728281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7679500 + ... + 7682566.

It is an arithmetic number, because the mean of its divisors is an integer number (1507339080).

Almost surely, 2^23557728211 is an apocalyptic number.

23557728211 is a deficient number, since it is larger than the sum of its proper divisors (559697069).

23557728211 is a wasteful number, since it uses less digits than its factorization.

23557728211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954.

The product of its digits is 235200, while the sum is 43.

The spelling of 23557728211 in words is "twenty-three billion, five hundred fifty-seven million, seven hundred twenty-eight thousand, two hundred eleven".