164209286897 has 4 divisors (see below), whose sum is σ = 165502273536. Its totient is φ = 162916300260.

The previous prime is 164209286861. The next prime is 164209286911. The reversal of 164209286897 is 798682902461.

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 164209286897 - 2⁶ = 164209286833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164209286497) 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, 646493129 + ... + 646493382.

It is an arithmetic number, because the mean of its divisors is an integer number (41375568384).

Almost surely, 2^164209286897 is an apocalyptic number.

It is an amenable number.

164209286897 is a deficient number, since it is larger than the sum of its proper divisors (1292986639).

164209286897 is a wasteful number, since it uses less digits than its factorization.

164209286897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292986638.

The product of its (nonzero) digits is 20901888, while the sum is 62.

The spelling of 164209286897 in words is "one hundred sixty-four billion, two hundred nine million, two hundred eighty-six thousand, eight hundred ninety-seven".