50165150861 has 6 divisors (see below), whose sum is σ = 58355379630. Its totient is φ = 42998700696.

The previous prime is 50165150839. The next prime is 50165150897. The reversal of 50165150861 is 16805156105.

It can be written as a sum of positive squares in only one way, i.e., 45911632900 + 4253517961 = 214270^2 + 65219^2 .

It is a de Polignac number, because none of the positive numbers 2^k-50165150861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50165150821) 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, 511889246 + ... + 511889343.

It is an arithmetic number, because the mean of its divisors is an integer number (9725896605).

Almost surely, 2^50165150861 is an apocalyptic number.

It is an amenable number.

50165150861 is a deficient number, since it is larger than the sum of its proper divisors (8190228769).

50165150861 is a wasteful number, since it uses less digits than its factorization.

50165150861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023778603 (or 1023778596 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 38.

The spelling of 50165150861 in words is "fifty billion, one hundred sixty-five million, one hundred fifty thousand, eight hundred sixty-one".