164206454131 has 4 divisors (see below), whose sum is σ = 164207294064. Its totient is φ = 164205614200.

The previous prime is 164206454129. The next prime is 164206454141. The reversal of 164206454131 is 131454602461.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 164206454131 - 2¹ = 164206454129 is a prime.

It is a super-2 number, since 2×164206454131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164206454141) 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, 44541 + ... + 574801.

It is an arithmetic number, because the mean of its divisors is an integer number (41051823516).

Almost surely, 2^164206454131 is an apocalyptic number.

164206454131 is a deficient number, since it is larger than the sum of its proper divisors (839933).

164206454131 is an equidigital number, since it uses as much as digits as its factorization.

164206454131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839932.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 164206454131 in words is "one hundred sixty-four billion, two hundred six million, four hundred fifty-four thousand, one hundred thirty-one".