50055555661 has 16 divisors (see below), whose sum is σ = 52777254528. Its totient is φ = 47379816000.

The previous prime is 50055555659. The next prime is 50055555703. The reversal of 50055555661 is 16655555005.

It is not a de Polignac number, because 50055555661 - 2¹ = 50055555659 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 (50055555761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5447491 + ... + 5456671.

It is an arithmetic number, because the mean of its divisors is an integer number (3298578408).

Almost surely, 2^50055555661 is an apocalyptic number.

It is an amenable number.

50055555661 is a deficient number, since it is larger than the sum of its proper divisors (2721698867).

50055555661 is a wasteful number, since it uses less digits than its factorization.

50055555661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11652.

The product of its (nonzero) digits is 562500, while the sum is 43.

The spelling of 50055555661 in words is "fifty billion, fifty-five million, five hundred fifty-five thousand, six hundred sixty-one".