133564004556 has 36 divisors (see below), whose sum is σ = 322026873336. Its totient is φ = 43085159040.

The previous prime is 133564004507. The next prime is 133564004603. The reversal of 133564004556 is 655400465331.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5779485 + ... + 5802548.

It is an arithmetic number, because the mean of its divisors is an integer number (8945190926).

Almost surely, 2^133564004556 is an apocalyptic number.

It is an amenable number.

133564004556 is an abundant number, since it is smaller than the sum of its proper divisors (188462868780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133564004556 is a wasteful number, since it uses less digits than its factorization.

133564004556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11582102 (or 11582069 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

Adding to 133564004556 its reverse (655400465331), we get a palindrome (788964469887).

The spelling of 133564004556 in words is "one hundred thirty-three billion, five hundred sixty-four million, four thousand, five hundred fifty-six".