164231556501 has 8 divisors (see below), whose sum is σ = 219931634080. Its totient is φ = 109009591632.

The previous prime is 164231556473. The next prime is 164231556547. The reversal of 164231556501 is 105655132461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164231556501 - 2⁹ = 164231555989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164231556501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164231556571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119527375 + ... + 119528748.

It is an arithmetic number, because the mean of its divisors is an integer number (27491454260).

Almost surely, 2^164231556501 is an apocalyptic number.

It is an amenable number.

164231556501 is a deficient number, since it is larger than the sum of its proper divisors (55700077579).

164231556501 is a wasteful number, since it uses less digits than its factorization.

164231556501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239056355.

The product of its (nonzero) digits is 108000, while the sum is 39.

Adding to 164231556501 its reverse (105655132461), we get a palindrome (269886688962).

The spelling of 164231556501 in words is "one hundred sixty-four billion, two hundred thirty-one million, five hundred fifty-six thousand, five hundred one".