811984135097 has 8 divisors (see below), whose sum is σ = 831205483680. Its totient is φ = 792778150080.

The previous prime is 811984135093. The next prime is 811984135133. The reversal of 811984135097 is 790531489118.

It is a happy number.

811984135097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 811984135097 - 2² = 811984135093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811984135093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3733904 + ... + 3945377.

It is an arithmetic number, because the mean of its divisors is an integer number (103900685460).

Almost surely, 2^811984135097 is an apocalyptic number.

It is an amenable number.

811984135097 is a deficient number, since it is larger than the sum of its proper divisors (19221348583).

811984135097 is a wasteful number, since it uses less digits than its factorization.

811984135097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7681783.

The product of its (nonzero) digits is 2177280, while the sum is 56.

The spelling of 811984135097 in words is "eight hundred eleven billion, nine hundred eighty-four million, one hundred thirty-five thousand, ninety-seven".