50666061672721 has 4 divisors (see below), whose sum is σ = 55272067279344. Its totient is φ = 46060056066100.

The previous prime is 50666061672713. The next prime is 50666061672761. The reversal of 50666061672721 is 12727616066605.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50666061672721 - 2³ = 50666061672713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50666061672761) 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, 2303002803295 + ... + 2303002803316.

It is an arithmetic number, because the mean of its divisors is an integer number (13818016819836).

Almost surely, 2^{50666061672721} is an apocalyptic number.

It is an amenable number.

50666061672721 is a deficient number, since it is larger than the sum of its proper divisors (4606005606623).

50666061672721 is a wasteful number, since it uses less digits than its factorization.

50666061672721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4606005606622.

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 50666061672721 in words is "fifty trillion, six hundred sixty-six billion, sixty-one million, six hundred seventy-two thousand, seven hundred twenty-one".