50561387806 has 12 divisors (see below), whose sum is σ = 80043860232. Its totient is φ = 23950130724.

The previous prime is 50561387803. The next prime is 50561387819. The reversal of 50561387806 is 60878316505.

It is a self number, because there is not a number n which added to its sum of digits gives 50561387806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50561387803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35014090 + ... + 35015533.

It is an arithmetic number, because the mean of its divisors is an integer number (6670321686).

Almost surely, 2^50561387806 is an apocalyptic number.

50561387806 is a deficient number, since it is larger than the sum of its proper divisors (29482472426).

50561387806 is a wasteful number, since it uses less digits than its factorization.

50561387806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70029663 (or 70029644 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 50561387806 in words is "fifty billion, five hundred sixty-one million, three hundred eighty-seven thousand, eight hundred six".