10705905981 has 12 divisors (see below), whose sum is σ = 15533435008. Its totient is φ = 7105263624.

The previous prime is 10705905971. The next prime is 10705905997. The reversal of 10705905981 is 18950950701.

10705905981 is a `hidden beast` number, since 1 + 0 + 7 + 0 + 59 + 0 + 598 + 1 = 666.

It is not a de Polignac number, because 10705905981 - 2¹¹ = 10705903933 is a prime.

It is a super-2 number, since 2×10705905981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10705905971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2665135 + ... + 2669148.

Almost surely, 2^10705905981 is an apocalyptic number.

It is an amenable number.

10705905981 is a deficient number, since it is larger than the sum of its proper divisors (4827529027).

10705905981 is a wasteful number, since it uses less digits than its factorization.

10705905981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5334512 (or 5334509 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 45.

The spelling of 10705905981 in words is "ten billion, seven hundred five million, nine hundred five thousand, nine hundred eighty-one".