50051366551321 has 4 divisors (see below), whose sum is σ = 50162839528500. Its totient is φ = 49939893574144.

The previous prime is 50051366551283. The next prime is 50051366551343. The reversal of 50051366551321 is 12315566315005.

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 33608049590025 + 16443316961296 = 5797245^2 + 4055036^2 .

It is a cyclic number.

It is not a de Polignac number, because 50051366551321 - 2¹⁵ = 50051366518553 is a prime.

It is a super-2 number, since 2×50051366551321² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50051346551321) 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, 55736487916 + ... + 55736488813.

It is an arithmetic number, because the mean of its divisors is an integer number (12540709882125).

Almost surely, 2^{50051366551321} is an apocalyptic number.

It is an amenable number.

50051366551321 is a deficient number, since it is larger than the sum of its proper divisors (111472977179).

50051366551321 is a wasteful number, since it uses less digits than its factorization.

50051366551321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111472977178.

The product of its (nonzero) digits is 405000, while the sum is 43.

The spelling of 50051366551321 in words is "fifty trillion, fifty-one billion, three hundred sixty-six million, five hundred fifty-one thousand, three hundred twenty-one".