50005505055551 has 4 divisors (see below), whose sum is σ = 50500609066104. Its totient is φ = 49510401045000.

The previous prime is 50005505055497. The next prime is 50005505055553. The reversal of 50005505055551 is 15555050550005.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50005505055551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50005505055499 and 50005505055508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50005505055553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247552005125 + ... + 247552005326.

It is an arithmetic number, because the mean of its divisors is an integer number (12625152266526).

Almost surely, 2^{50005505055551} is an apocalyptic number.

50005505055551 is a deficient number, since it is larger than the sum of its proper divisors (495104010553).

50005505055551 is a wasteful number, since it uses less digits than its factorization.

50005505055551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495104010552.

The product of its (nonzero) digits is 390625, while the sum is 41.

The spelling of 50005505055551 in words is "fifty trillion, five billion, five hundred five million, fifty-five thousand, five hundred fifty-one".