10689648881 has 4 divisors (see below), whose sum is σ = 11252262000. Its totient is φ = 10127035764.

The previous prime is 10689648859. The next prime is 10689648883. The reversal of 10689648881 is 18884698601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10689648881 - 2⁶ = 10689648817 is a prime.

It is a super-2 number, since 2×10689648881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10689648881.

It is not an unprimeable number, because it can be changed into a prime (10689648883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281306531 + ... + 281306568.

It is an arithmetic number, because the mean of its divisors is an integer number (2813065500).

Almost surely, 2^10689648881 is an apocalyptic number.

It is an amenable number.

10689648881 is a deficient number, since it is larger than the sum of its proper divisors (562613119).

10689648881 is an equidigital number, since it uses as much as digits as its factorization.

10689648881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562613118.

The product of its (nonzero) digits is 5308416, while the sum is 59.

The spelling of 10689648881 in words is "ten billion, six hundred eighty-nine million, six hundred forty-eight thousand, eight hundred eighty-one".