50505005005551 has 6 divisors (see below), whose sum is σ = 72951673896920. Its totient is φ = 33670003337028.

The previous prime is 50505005005537. The next prime is 50505005005571. The reversal of 50505005005551 is 15550050050505.

It is a happy number.

50505005005551 is a `hidden beast` number, since 5 + 0 + 5 + 0 + 50 + 0 + 50 + 0 + 5 + 551 = 666.

It is not a de Polignac number, because 50505005005551 - 2²⁶ = 50504937896687 is a prime.

It is a super-2 number, since 2×50505005005551² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50505005005571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2805833611411 + ... + 2805833611428.

Almost surely, 2^{50505005005551} is an apocalyptic number.

50505005005551 is a deficient number, since it is larger than the sum of its proper divisors (22446668891369).

50505005005551 is a wasteful number, since it uses less digits than its factorization.

50505005005551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611667222845 (or 5611667222842 counting only the distinct ones).

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

The spelling of 50505005005551 in words is "fifty trillion, five hundred five billion, five million, five thousand, five hundred fifty-one".