1008891678097 has 4 divisors (see below), whose sum is σ = 1008945029556. Its totient is φ = 1008838326640.

The previous prime is 1008891678079. The next prime is 1008891678101. The reversal of 1008891678097 is 7908761988001.

It is a happy number.

1008891678097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 1004436²+1.

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 814296883456 + 194594794641 = 902384^2 + 441129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1008891678097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1008891678037) 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, 26647354 + ... + 26685187.

It is an arithmetic number, because the mean of its divisors is an integer number (252236257389).

Almost surely, 2^{1008891678097} is an apocalyptic number.

It is an amenable number.

1008891678097 is a deficient number, since it is larger than the sum of its proper divisors (53351459).

1008891678097 is an equidigital number, since it uses as much as digits as its factorization.

1008891678097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53351458.

The product of its (nonzero) digits is 12192768, while the sum is 64.

The spelling of 1008891678097 in words is "one trillion, eight billion, eight hundred ninety-one million, six hundred seventy-eight thousand, ninety-seven".