50550555128 has 8 divisors (see below), whose sum is σ = 94782290880. Its totient is φ = 25275277560.

The previous prime is 50550555113. The next prime is 50550555217. The reversal of 50550555128 is 82155505505.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3159409688 + ... + 3159409703.

It is an arithmetic number, because the mean of its divisors is an integer number (11847786360).

Almost surely, 2^50550555128 is an apocalyptic number.

It is an amenable number.

50550555128 is a deficient number, since it is larger than the sum of its proper divisors (44231735752).

50550555128 is a wasteful number, since it uses less digits than its factorization.

50550555128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6318819397 (or 6318819393 counting only the distinct ones).

The product of its (nonzero) digits is 250000, while the sum is 41.

The spelling of 50550555128 in words is "fifty billion, five hundred fifty million, five hundred fifty-five thousand, one hundred twenty-eight".