133628013644 has 24 divisors (see below), whose sum is σ = 237855878400. Its totient is φ = 65677282704.

The previous prime is 133628013637. The next prime is 133628013667. The reversal of 133628013644 is 446310826331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945224 + ... + 1077359.

It is an arithmetic number, because the mean of its divisors is an integer number (9910661600).

Almost surely, 2^133628013644 is an apocalyptic number.

It is an amenable number.

133628013644 is a deficient number, since it is larger than the sum of its proper divisors (104227864756).

133628013644 is a wasteful number, since it uses less digits than its factorization.

133628013644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022869 (or 2022867 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

Adding to 133628013644 its reverse (446310826331), we get a palindrome (579938839975).

The spelling of 133628013644 in words is "one hundred thirty-three billion, six hundred twenty-eight million, thirteen thousand, six hundred forty-four".