50669559801 has 81 divisors (see below), whose sum is σ = 88631972559. Its totient is φ = 28881102096.

The previous prime is 50669559793. The next prime is 50669559881. The reversal of 50669559801 is 10895596605.

The square root of 50669559801 is 225099.

It is a perfect power (a square), and thus also a powerful number.

50669559801 is a `hidden beast` number, since 5 + 0 + 6 + 6 + 9 + 559 + 80 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 33957275625 + 16712284176 = 184275^2 + 129276^2 .

It is a tau number, because it is divible by the number of its divisors (81).

It is not a de Polignac number, because 50669559801 - 2³ = 50669559793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50669559881) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 127630935 + ... + 127631331.

Almost surely, 2^50669559801 is an apocalyptic number.

50669559801 is the 225099-th square number.

50669559801 is the 112550-th centered octagonal number.

It is an amenable number.

50669559801 is a deficient number, since it is larger than the sum of its proper divisors (37962412758).

50669559801 is an frugal number, since it uses more digits than its factorization.

50669559801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 54.

The spelling of 50669559801 in words is "fifty billion, six hundred sixty-nine million, five hundred fifty-nine thousand, eight hundred one".