10923572981 has 2 divisors, whose sum is σ = 10923572982. Its totient is φ = 10923572980.

The previous prime is 10923572977. The next prime is 10923573041. The reversal of 10923572981 is 18927532901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7508222500 + 3415350481 = 86650^2 + 58441^2 .

It is a cyclic number.

It is not a de Polignac number, because 10923572981 - 2² = 10923572977 is a prime.

It is a super-2 number, since 2×10923572981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10923572971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5461786490 + 5461786491.

It is an arithmetic number, because the mean of its divisors is an integer number (5461786491).

Almost surely, 2^10923572981 is an apocalyptic number.

It is an amenable number.

10923572981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10923572981 is an equidigital number, since it uses as much as digits as its factorization.

10923572981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 10923572981 in words is "ten billion, nine hundred twenty-three million, five hundred seventy-two thousand, nine hundred eighty-one".