164712791231 has 4 divisors (see below), whose sum is σ = 168217318752. Its totient is φ = 161208263712.

The previous prime is 164712791219. The next prime is 164712791233. The reversal of 164712791231 is 132197217461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164712791231 is a prime.

It is a super-2 number, since 2×164712791231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164712791233) 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, 1752263690 + ... + 1752263783.

It is an arithmetic number, because the mean of its divisors is an integer number (42054329688).

Almost surely, 2^164712791231 is an apocalyptic number.

164712791231 is a deficient number, since it is larger than the sum of its proper divisors (3504527521).

164712791231 is an equidigital number, since it uses as much as digits as its factorization.

164712791231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504527520.

The product of its digits is 127008, while the sum is 44.

The spelling of 164712791231 in words is "one hundred sixty-four billion, seven hundred twelve million, seven hundred ninety-one thousand, two hundred thirty-one".