56105510605550 has 48 divisors (see below), whose sum is σ = 119315894341632. Its totient is φ = 19227851042400.

The previous prime is 56105510605517. The next prime is 56105510605553. The reversal of 56105510605550 is 5550601550165.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56105510605553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33873422 + ... + 35491121.

It is an arithmetic number, because the mean of its divisors is an integer number (2485747798784).

Almost surely, 2^{56105510605550} is an apocalyptic number.

56105510605550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56105510605550 is an abundant number, since it is smaller than the sum of its proper divisors (63210383736082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56105510605550 is a wasteful number, since it uses less digits than its factorization.

56105510605550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69366873 (or 69366868 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 56105510605550 in words is "fifty-six trillion, one hundred five billion, five hundred ten million, six hundred five thousand, five hundred fifty".