969011099981 has 2 divisors, whose sum is σ = 969011099982. Its totient is φ = 969011099980.

The previous prime is 969011099939. The next prime is 969011100077. The reversal of 969011099981 is 189990110969.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 966404997481 + 2606102500 = 983059^2 + 51050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-969011099981 is a prime.

It is a super-2 number, since 2×969011099981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (969011099921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484505549990 + 484505549991.

It is an arithmetic number, because the mean of its divisors is an integer number (484505549991).

Almost surely, 2^969011099981 is an apocalyptic number.

It is an amenable number.

969011099981 is a deficient number, since it is larger than the sum of its proper divisors (1).

969011099981 is an equidigital number, since it uses as much as digits as its factorization.

969011099981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2834352, while the sum is 62.

The spelling of 969011099981 in words is "nine hundred sixty-nine billion, eleven million, ninety-nine thousand, nine hundred eighty-one".