10000000006981 has 2 divisors, whose sum is σ = 10000000006982. Its totient is φ = 10000000006980.

The previous prime is 10000000006973. The next prime is 10000000007003. The reversal of 10000000006981 is 18960000000001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6932741660100 + 3067258346881 = 2633010^2 + 1751359^2 .

It is a cyclic number.

It is not a de Polignac number, because 10000000006981 - 2³ = 10000000006973 is a prime.

It is a super-2 number, since 2×10000000006981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10000000006081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000000003490 + 5000000003491.

It is an arithmetic number, because the mean of its divisors is an integer number (5000000003491).

Almost surely, 2^{10000000006981} is an apocalyptic number.

It is an amenable number.

10000000006981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000000006981 is an equidigital number, since it uses as much as digits as its factorization.

10000000006981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

Adding to 10000000006981 its reverse (18960000000001), we get a palindrome (28960000006982).

The spelling of 10000000006981 in words is "ten trillion, six thousand, nine hundred eighty-one".