551551503053445 has 16 divisors (see below), whose sum is σ = 885622911671232. Its totient is φ = 293113966033280.

The previous prime is 551551503053417. The next prime is 551551503053461. The reversal of 551551503053445 is 544350305155155.

It is not a de Polignac number, because 551551503053445 - 2¹⁵ = 551551503020677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65427220347 + ... + 65427228776.

It is an arithmetic number, because the mean of its divisors is an integer number (55351431979452).

Almost surely, 2^{551551503053445} is an apocalyptic number.

It is an amenable number.

551551503053445 is a deficient number, since it is larger than the sum of its proper divisors (334071408617787).

551551503053445 is a wasteful number, since it uses less digits than its factorization.

551551503053445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130854449412.

The product of its (nonzero) digits is 11250000, while the sum is 51.

The spelling of 551551503053445 in words is "five hundred fifty-one trillion, five hundred fifty-one billion, five hundred three million, fifty-three thousand, four hundred forty-five".