50213968961 has 4 divisors (see below), whose sum is σ = 54076581972. Its totient is φ = 46351355952.

The previous prime is 50213968957. The next prime is 50213968963. The reversal of 50213968961 is 16986931205.

It is a happy number.

50213968961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23357314561 + 26856654400 = 152831^2 + 163880^2 .

It is a cyclic number.

It is not a de Polignac number, because 50213968961 - 2² = 50213968957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50213968963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1931306486 + ... + 1931306511.

It is an arithmetic number, because the mean of its divisors is an integer number (13519145493).

Almost surely, 2^50213968961 is an apocalyptic number.

It is an amenable number.

50213968961 is a deficient number, since it is larger than the sum of its proper divisors (3862613011).

50213968961 is a wasteful number, since it uses less digits than its factorization.

50213968961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862613010.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 50213968961 in words is "fifty billion, two hundred thirteen million, nine hundred sixty-eight thousand, nine hundred sixty-one".