10881850691 has 4 divisors (see below), whose sum is σ = 10883120400. Its totient is φ = 10880580984.

The previous prime is 10881850669. The next prime is 10881850717. The reversal of 10881850691 is 19605818801.

10881850691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10881850691 is a prime.

It is a super-2 number, since 2×10881850691² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10881859691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621911 + ... + 639168.

It is an arithmetic number, because the mean of its divisors is an integer number (2720780100).

Almost surely, 2^10881850691 is an apocalyptic number.

10881850691 is a deficient number, since it is larger than the sum of its proper divisors (1269709).

10881850691 is an equidigital number, since it uses as much as digits as its factorization.

10881850691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269708.

The product of its (nonzero) digits is 138240, while the sum is 47.

The spelling of 10881850691 in words is "ten billion, eight hundred eighty-one million, eight hundred fifty thousand, six hundred ninety-one".