6408120894697 has 4 divisors (see below), whose sum is σ = 6408129178836. Its totient is φ = 6408112610560.

The previous prime is 6408120894671. The next prime is 6408120894713. The reversal of 6408120894697 is 7964980218046.

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 3930956536896 + 2477164357801 = 1982664^2 + 1573901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6408120894697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6408127894697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2846728 + ... + 4573849.

It is an arithmetic number, because the mean of its divisors is an integer number (1602032294709).

Almost surely, 2^{6408120894697} is an apocalyptic number.

It is an amenable number.

6408120894697 is a deficient number, since it is larger than the sum of its proper divisors (8284139).

6408120894697 is an equidigital number, since it uses as much as digits as its factorization.

6408120894697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284138.

The product of its (nonzero) digits is 41803776, while the sum is 64.

The spelling of 6408120894697 in words is "six trillion, four hundred eight billion, one hundred twenty million, eight hundred ninety-four thousand, six hundred ninety-seven".