4551021545432 has 16 divisors (see below), whose sum is σ = 8533736516760. Its totient is φ = 2275358474304.

The previous prime is 4551021545429. The next prime is 4551021545467. The reversal of 4551021545432 is 2345451201554.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4551021545432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18910253 + ... + 19149404.

Almost surely, 2^{4551021545432} is an apocalyptic number.

It is an amenable number.

4551021545432 is a deficient number, since it is larger than the sum of its proper divisors (3982714971328).

4551021545432 is a wasteful number, since it uses less digits than its factorization.

4551021545432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38074610 (or 38074606 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 41.

Adding to 4551021545432 its reverse (2345451201554), we get a palindrome (6896472746986).

The spelling of 4551021545432 in words is "four trillion, five hundred fifty-one billion, twenty-one million, five hundred forty-five thousand, four hundred thirty-two".