50505055551 has 32 divisors (see below), whose sum is σ = 75258560000. Its totient is φ = 33474000384.

The previous prime is 50505055519. The next prime is 50505055577. The reversal of 50505055551 is 15555050505.

It is a happy number.

50505055551 is a `hidden beast` number, since 5 + 0 + 5 + 0 + 50 + 55 + 551 = 666.

It is not a de Polignac number, because 50505055551 - 2⁵ = 50505055519 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 (50505055351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8480991 + ... + 8486943.

It is an arithmetic number, because the mean of its divisors is an integer number (2351830000).

Almost surely, 2^50505055551 is an apocalyptic number.

50505055551 is a deficient number, since it is larger than the sum of its proper divisors (24753504449).

50505055551 is a wasteful number, since it uses less digits than its factorization.

50505055551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7740 (or 7734 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 50505055551 in words is "fifty billion, five hundred five million, fifty-five thousand, five hundred fifty-one".