50055555500066 has 4 divisors (see below), whose sum is σ = 75083333250102. Its totient is φ = 25027777750032.

The previous prime is 50055555500039. The next prime is 50055555500099. The reversal of 50055555500066 is 66000555555005.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46963321174441 + 3092234325625 = 6852979^2 + 1758475^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12513888875015 + ... + 12513888875018.

Almost surely, 2^{50055555500066} is an apocalyptic number.

50055555500066 is a deficient number, since it is larger than the sum of its proper divisors (25027777750036).

50055555500066 is a wasteful number, since it uses less digits than its factorization.

50055555500066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25027777750035.

The product of its (nonzero) digits is 2812500, while the sum is 47.

The spelling of 50055555500066 in words is "fifty trillion, fifty-five billion, five hundred fifty-five million, five hundred thousand, sixty-six".