981550631041 has 2 divisors, whose sum is σ = 981550631042. Its totient is φ = 981550631040.

The previous prime is 981550630961. The next prime is 981550631069. The reversal of 981550631041 is 140136055189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 789439358016 + 192111273025 = 888504^2 + 438305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981550631041 is a prime.

It is not a weakly prime, because it can be changed into another prime (981550601041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490775315520 + 490775315521.

It is an arithmetic number, because the mean of its divisors is an integer number (490775315521).

Almost surely, 2^981550631041 is an apocalyptic number.

It is an amenable number.

981550631041 is a deficient number, since it is larger than the sum of its proper divisors (1).

981550631041 is an equidigital number, since it uses as much as digits as its factorization.

981550631041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 981550631041 in words is "nine hundred eighty-one billion, five hundred fifty million, six hundred thirty-one thousand, forty-one".