5551056165605 has 8 divisors (see below), whose sum is σ = 6786951689592. Its totient is φ = 4357055405248.

The previous prime is 5551056165601. The next prime is 5551056165623. The reversal of 5551056165605 is 5065616501555.

5551056165605 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 94973063329 + 5456083102276 = 308177^2 + 2335826^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5551056165605 - 2² = 5551056165601 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 (5551056165601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10473690614 + ... + 10473691143.

It is an arithmetic number, because the mean of its divisors is an integer number (848368961199).

Almost surely, 2^{5551056165605} is an apocalyptic number.

It is an amenable number.

5551056165605 is a deficient number, since it is larger than the sum of its proper divisors (1235895523987).

5551056165605 is a wasteful number, since it uses less digits than its factorization.

5551056165605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20947381815.

The product of its (nonzero) digits is 3375000, while the sum is 50.

The spelling of 5551056165605 in words is "five trillion, five hundred fifty-one billion, fifty-six million, one hundred sixty-five thousand, six hundred five".