881026008409 has 4 divisors (see below), whose sum is σ = 881030642404. Its totient is φ = 881021374416.

The previous prime is 881026008407. The next prime is 881026008433. The reversal of 881026008409 is 904800620188.

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

It can be written as a sum of positive squares in 2 ways, for example, as 802305361225 + 78720647184 = 895715^2 + 280572^2 .

It is a cyclic number.

It is not a de Polignac number, because 881026008409 - 2¹ = 881026008407 is a prime.

It is a super-2 number, since 2×881026008409² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (881026008407) 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, 2019042 + ... + 2416315.

It is an arithmetic number, because the mean of its divisors is an integer number (220257660601).

Almost surely, 2^881026008409 is an apocalyptic number.

It is an amenable number.

881026008409 is a deficient number, since it is larger than the sum of its proper divisors (4633995).

881026008409 is a wasteful number, since it uses less digits than its factorization.

881026008409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633994.

The product of its (nonzero) digits is 221184, while the sum is 46.

The spelling of 881026008409 in words is "eight hundred eighty-one billion, twenty-six million, eight thousand, four hundred nine".