10971381109 has 16 divisors (see below), whose sum is σ = 12442158400. Its totient is φ = 9590576256.

The previous prime is 10971381107. The next prime is 10971381121. The reversal of 10971381109 is 90118317901.

It is a cyclic number.

It is not a de Polignac number, because 10971381109 - 2¹ = 10971381107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10971381107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738337 + ... + 753049.

It is an arithmetic number, because the mean of its divisors is an integer number (777634900).

Almost surely, 2^10971381109 is an apocalyptic number.

10971381109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

10971381109 is a deficient number, since it is larger than the sum of its proper divisors (1470777291).

10971381109 is a wasteful number, since it uses less digits than its factorization.

10971381109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17764.

The product of its (nonzero) digits is 13608, while the sum is 40.

The spelling of 10971381109 in words is "ten billion, nine hundred seventy-one million, three hundred eighty-one thousand, one hundred nine".