551511233404 has 6 divisors (see below), whose sum is σ = 965144658464. Its totient is φ = 275755616700.

The previous prime is 551511233341. The next prime is 551511233411. The reversal of 551511233404 is 404332115155.

It is a self number, because there is not a number n which added to its sum of digits gives 551511233404.

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, 68938904172 + ... + 68938904179.

Almost surely, 2^551511233404 is an apocalyptic number.

It is an amenable number.

551511233404 is a deficient number, since it is larger than the sum of its proper divisors (413633425060).

551511233404 is a wasteful number, since it uses less digits than its factorization.

551511233404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137877808355 (or 137877808353 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 551511233404 its reverse (404332115155), we get a palindrome (955843348559).

The spelling of 551511233404 in words is "five hundred fifty-one billion, five hundred eleven million, two hundred thirty-three thousand, four hundred four".