233221464136 has 8 divisors (see below), whose sum is σ = 437290245270. Its totient is φ = 116610732064.

The previous prime is 233221464059. The next prime is 233221464139. The reversal of 233221464136 is 631464122332.

It can be written as a sum of positive squares in only one way, i.e., 210176402500 + 23045061636 = 458450^2 + 151806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 233221464095 and 233221464104.

It is not an unprimeable number, because it can be changed into a prime (233221464139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14576341501 + ... + 14576341516.

Almost surely, 2^233221464136 is an apocalyptic number.

It is an amenable number.

233221464136 is a deficient number, since it is larger than the sum of its proper divisors (204068781134).

233221464136 is a wasteful number, since it uses less digits than its factorization.

233221464136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29152683023 (or 29152683019 counting only the distinct ones).

The product of its digits is 124416, while the sum is 37.

Adding to 233221464136 its reverse (631464122332), we get a palindrome (864685586468).

The spelling of 233221464136 in words is "two hundred thirty-three billion, two hundred twenty-one million, four hundred sixty-four thousand, one hundred thirty-six".