551632216444 has 6 divisors (see below), whose sum is σ = 965356378784. Its totient is φ = 275816108220.

The previous prime is 551632216439. The next prime is 551632216463. The reversal of 551632216444 is 444612236155.

It is a self number, because there is not a number n which added to its sum of digits gives 551632216444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68954027052 + ... + 68954027059.

Almost surely, 2^551632216444 is an apocalyptic number.

It is an amenable number.

551632216444 is a deficient number, since it is larger than the sum of its proper divisors (413724162340).

551632216444 is a wasteful number, since it uses less digits than its factorization.

551632216444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137908054115 (or 137908054113 counting only the distinct ones).

The product of its digits is 691200, while the sum is 43.

The spelling of 551632216444 in words is "five hundred fifty-one billion, six hundred thirty-two million, two hundred sixteen thousand, four hundred forty-four".