981021111101963 has 2 divisors, whose sum is σ = 981021111101964. Its totient is φ = 981021111101962.

The previous prime is 981021111101959. The next prime is 981021111102031. The reversal of 981021111101963 is 369101111120189.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 981021111101963 - 2² = 981021111101959 is a prime.

It is a super-3 number, since 3×981021111101963³ (a number of 46 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (981021111101063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490510555550981 + 490510555550982.

It is an arithmetic number, because the mean of its divisors is an integer number (490510555550982).

Almost surely, 2^{981021111101963} is an apocalyptic number.

981021111101963 is a deficient number, since it is larger than the sum of its proper divisors (1).

981021111101963 is an equidigital number, since it uses as much as digits as its factorization.

981021111101963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 44.

The spelling of 981021111101963 in words is "nine hundred eighty-one trillion, twenty-one billion, one hundred eleven million, one hundred one thousand, nine hundred sixty-three".