2167910398897 has 4 divisors (see below), whose sum is σ = 2176153404480. Its totient is φ = 2159667393316.

The previous prime is 2167910398813. The next prime is 2167910398931. The reversal of 2167910398897 is 7988930197612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2167910398897 - 2¹⁵ = 2167910366129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2167910098897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4121502397 + ... + 4121502922.

It is an arithmetic number, because the mean of its divisors is an integer number (544038351120).

Almost surely, 2^{2167910398897} is an apocalyptic number.

It is an amenable number.

2167910398897 is a deficient number, since it is larger than the sum of its proper divisors (8243005583).

2167910398897 is an equidigital number, since it uses as much as digits as its factorization.

2167910398897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8243005582.

The product of its (nonzero) digits is 82301184, while the sum is 70.

The spelling of 2167910398897 in words is "two trillion, one hundred sixty-seven billion, nine hundred ten million, three hundred ninety-eight thousand, eight hundred ninety-seven".