50061645121 has 2 divisors, whose sum is σ = 50061645122. Its totient is φ = 50061645120.

The previous prime is 50061645031. The next prime is 50061645163. The reversal of 50061645121 is 12154616005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38641730625 + 11419914496 = 196575^2 + 106864^2 .

It is a cyclic number.

It is not a de Polignac number, because 50061645121 - 2⁷ = 50061644993 is a prime.

It is not a weakly prime, because it can be changed into another prime (50061645421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25030822560 + 25030822561.

It is an arithmetic number, because the mean of its divisors is an integer number (25030822561).

Almost surely, 2^50061645121 is an apocalyptic number.

It is an amenable number.

50061645121 is a deficient number, since it is larger than the sum of its proper divisors (1).

50061645121 is an equidigital number, since it uses as much as digits as its factorization.

50061645121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 50061645121 in words is "fifty billion, sixty-one million, six hundred forty-five thousand, one hundred twenty-one".