551112401663 has 4 divisors (see below), whose sum is σ = 580118317560. Its totient is φ = 522106485768.

The previous prime is 551112401659. The next prime is 551112401717. The reversal of 551112401663 is 366104211155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 551112401663 - 2² = 551112401659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551112401633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14502957920 + ... + 14502957957.

It is an arithmetic number, because the mean of its divisors is an integer number (145029579390).

Almost surely, 2^551112401663 is an apocalyptic number.

551112401663 is a deficient number, since it is larger than the sum of its proper divisors (29005915897).

551112401663 is a wasteful number, since it uses less digits than its factorization.

551112401663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29005915896.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 551112401663 in words is "five hundred fifty-one billion, one hundred twelve million, four hundred one thousand, six hundred sixty-three".