50325537785981 has 2 divisors, whose sum is σ = 50325537785982. Its totient is φ = 50325537785980.

The previous prime is 50325537785891. The next prime is 50325537785993. The reversal of 50325537785981 is 18958773552305.

Together with previous prime (50325537785891) 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., 45816247312900 + 4509290473081 = 6768770^2 + 2123509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50325537785981 is a prime.

It is a super-2 number, since 2×50325537785981² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50325537785881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25162768892990 + 25162768892991.

It is an arithmetic number, because the mean of its divisors is an integer number (25162768892991).

Almost surely, 2^{50325537785981} is an apocalyptic number.

It is an amenable number.

50325537785981 is a deficient number, since it is larger than the sum of its proper divisors (1).

50325537785981 is an equidigital number, since it uses as much as digits as its factorization.

50325537785981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520000, while the sum is 68.

The spelling of 50325537785981 in words is "fifty trillion, three hundred twenty-five billion, five hundred thirty-seven million, seven hundred eighty-five thousand, nine hundred eighty-one".