50005000061 has 2 divisors, whose sum is σ = 50005000062. Its totient is φ = 50005000060.

The previous prime is 50005000049. The next prime is 50005000103. The reversal of 50005000061 is 16000050005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48578804836 + 1426195225 = 220406^2 + 37765^2 .

It is a cyclic number.

It is not a de Polignac number, because 50005000061 - 2¹⁸ = 50004737917 is a prime.

It is a super-2 number, since 2×50005000061² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50005008061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25002500030 + 25002500031.

It is an arithmetic number, because the mean of its divisors is an integer number (25002500031).

Almost surely, 2^50005000061 is an apocalyptic number.

It is an amenable number.

50005000061 is a deficient number, since it is larger than the sum of its proper divisors (1).

50005000061 is an equidigital number, since it uses as much as digits as its factorization.

50005000061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 17.

Adding to 50005000061 its reverse (16000050005), we get a palindrome (66005050066).

The spelling of 50005000061 in words is "fifty billion, five million, sixty-one", and thus it is an aban number and an uban number.