10889444680861 has 4 divisors (see below), whose sum is σ = 10890658539424. Its totient is φ = 10888230822300.

The previous prime is 10889444680841. The next prime is 10889444680879. The reversal of 10889444680861 is 16808644498801.

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 10889444680861 - 2²¹ = 10889442583709 is a prime.

It is a super-2 number, since 2×10889444680861² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10889444680841) 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, 606915825 + ... + 606933766.

It is an arithmetic number, because the mean of its divisors is an integer number (2722664634856).

Almost surely, 2^{10889444680861} is an apocalyptic number.

It is an amenable number.

10889444680861 is a deficient number, since it is larger than the sum of its proper divisors (1213858563).

10889444680861 is an equidigital number, since it uses as much as digits as its factorization.

10889444680861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213858562.

The product of its (nonzero) digits is 84934656, while the sum is 67.

The spelling of 10889444680861 in words is "ten trillion, eight hundred eighty-nine billion, four hundred forty-four million, six hundred eighty thousand, eight hundred sixty-one".