164597674677 has 4 divisors (see below), whose sum is σ = 219463566240. Its totient is φ = 109731783116.

The previous prime is 164597674663. The next prime is 164597674693. The reversal of 164597674677 is 776476795461.

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 164597674677 - 2²⁰ = 164596626101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164597684677) 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, 27432945777 + ... + 27432945782.

It is an arithmetic number, because the mean of its divisors is an integer number (54865891560).

Almost surely, 2^164597674677 is an apocalyptic number.

It is an amenable number.

164597674677 is a deficient number, since it is larger than the sum of its proper divisors (54865891563).

164597674677 is an equidigital number, since it uses as much as digits as its factorization.

164597674677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54865891562.

The product of its digits is 373403520, while the sum is 69.

The spelling of 164597674677 in words is "one hundred sixty-four billion, five hundred ninety-seven million, six hundred seventy-four thousand, six hundred seventy-seven".