10891427044 has 9 divisors (see below), whose sum is σ = 19060362601. Its totient is φ = 5445609160.

The previous prime is 10891427039. The next prime is 10891427047. The reversal of 10891427044 is 44072419801.

The square root of 10891427044 is 104362.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1058721444 + 9832705600 = 32538^2 + 99160^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10891426988 and 10891427006.

It is not an unprimeable number, because it can be changed into a prime (10891427047) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 182634 + ... + 234814.

Almost surely, 2^10891427044 is an apocalyptic number.

10891427044 is the 104362-nd square number.

It is an amenable number.

10891427044 is a deficient number, since it is larger than the sum of its proper divisors (8168935557).

10891427044 is an frugal number, since it uses more digits than its factorization.

10891427044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104366 (or 52183 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 10891427044 in words is "ten billion, eight hundred ninety-one million, four hundred twenty-seven thousand, forty-four".