50015665993 has 2 divisors, whose sum is σ = 50015665994. Its totient is φ = 50015665992.

The previous prime is 50015665939. The next prime is 50015666003. The reversal of 50015665993 is 39956651005.

It is a happy number.

Together with previous prime (50015665939) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33077424384 + 16938241609 = 181872^2 + 130147^2 .

It is a cyclic number.

It is not a de Polignac number, because 50015665993 - 2²¹ = 50013568841 is a prime.

It is not a weakly prime, because it can be changed into another prime (50015665093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25007832996 + 25007832997.

It is an arithmetic number, because the mean of its divisors is an integer number (25007832997).

Almost surely, 2^50015665993 is an apocalyptic number.

It is an amenable number.

50015665993 is a deficient number, since it is larger than the sum of its proper divisors (1).

50015665993 is an equidigital number, since it uses as much as digits as its factorization.

50015665993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1093500, while the sum is 49.

The spelling of 50015665993 in words is "fifty billion, fifteen million, six hundred sixty-five thousand, nine hundred ninety-three".