1008789698881 has 4 divisors (see below), whose sum is σ = 1008799698564. Its totient is φ = 1008779699200.

The previous prime is 1008789698843. The next prime is 1008789698911. The reversal of 1008789698881 is 1888969878001.

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 66259393281 + 942530305600 = 257409^2 + 970840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1008789698881 - 2¹⁵ = 1008789666113 is a prime.

It is a super-2 number, since 2×1008789698881² (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 (1008789698821) 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, 4846960 + ... + 5050801.

It is an arithmetic number, because the mean of its divisors is an integer number (252199924641).

Almost surely, 2^{1008789698881} is an apocalyptic number.

It is an amenable number.

1008789698881 is a deficient number, since it is larger than the sum of its proper divisors (9999683).

1008789698881 is an equidigital number, since it uses as much as digits as its factorization.

1008789698881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9999682.

The product of its (nonzero) digits is 111476736, while the sum is 73.

The spelling of 1008789698881 in words is "one trillion, eight billion, seven hundred eighty-nine million, six hundred ninety-eight thousand, eight hundred eighty-one".