50555055050550 has 144 divisors (see below), whose sum is σ = 136245934010160. Its totient is φ = 13439537233920.

The previous prime is 50555055050471. The next prime is 50555055050573. The reversal of 50555055050550 is 5505055055505.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 50555055050496 and 50555055050505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1428373654 + ... + 1428409046.

It is an arithmetic number, because the mean of its divisors is an integer number (946152319515).

Almost surely, 2^{50555055050550} is an apocalyptic number.

50555055050550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 50555055050550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68122967005080).

50555055050550 is an abundant number, since it is smaller than the sum of its proper divisors (85690878959610).

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

50555055050550 is a wasteful number, since it uses less digits than its factorization.

50555055050550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45167 (or 45159 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

The spelling of 50555055050550 in words is "fifty trillion, five hundred fifty-five billion, fifty-five million, fifty thousand, five hundred fifty".