4551333621656 has 32 divisors (see below), whose sum is σ = 8982999144000. Its totient is φ = 2155869952416.

The previous prime is 4551333621577. The next prime is 4551333621677. The reversal of 4551333621656 is 6561263331554.

It is a congruent number.

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, 25792655 + ... + 25968513.

It is an arithmetic number, because the mean of its divisors is an integer number (280718723250).

Almost surely, 2^{4551333621656} is an apocalyptic number.

It is an amenable number.

4551333621656 is a deficient number, since it is larger than the sum of its proper divisors (4431665522344).

4551333621656 is a wasteful number, since it uses less digits than its factorization.

4551333621656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346151 (or 346147 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 50.

The spelling of 4551333621656 in words is "four trillion, five hundred fifty-one billion, three hundred thirty-three million, six hundred twenty-one thousand, six hundred fifty-six".