164172023420 has 48 divisors (see below), whose sum is σ = 353011696128. Its totient is φ = 64115257920.

The previous prime is 164172023417. The next prime is 164172023461. The reversal of 164172023420 is 24320271461.

164172023420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414974 + ... + 707493.

It is an arithmetic number, because the mean of its divisors is an integer number (7354410336).

Almost surely, 2^164172023420 is an apocalyptic number.

164172023420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164172023420 is an abundant number, since it is smaller than the sum of its proper divisors (188839672708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164172023420 is a wasteful number, since it uses less digits than its factorization.

164172023420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122650 (or 1122648 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 164172023420 its reverse (24320271461), we get a palindrome (188492294881).

The spelling of 164172023420 in words is "one hundred sixty-four billion, one hundred seventy-two million, twenty-three thousand, four hundred twenty".