50561651660550 has 24 divisors (see below), whose sum is σ = 125392896118536. Its totient is φ = 13483107109440.

The previous prime is 50561651660371. The next prime is 50561651660561. The reversal of 50561651660550 is 5506615616505.

It is a junction number, because it is equal to n+sod(n) for n = 50561651660493 and 50561651660502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168538838719 + ... + 168538839018.

It is an arithmetic number, because the mean of its divisors is an integer number (5224704004939).

Almost surely, 2^{50561651660550} is an apocalyptic number.

50561651660550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

50561651660550 is an abundant number, since it is smaller than the sum of its proper divisors (74831244457986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50561651660550 is a wasteful number, since it uses less digits than its factorization.

50561651660550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337077677752 (or 337077677747 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 51.

The spelling of 50561651660550 in words is "fifty trillion, five hundred sixty-one billion, six hundred fifty-one million, six hundred sixty thousand, five hundred fifty".