164866735051881 has 8 divisors (see below), whose sum is σ = 219822419475360. Its totient is φ = 109911103664832.

The previous prime is 164866735051813. The next prime is 164866735051891. The reversal of 164866735051881 is 188150537668461.

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

It is not a de Polignac number, because 164866735051881 - 2¹⁵ = 164866735019113 is a prime.

It is a super-2 number, since 2×164866735051881² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164866735051801) 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 7 ways as a sum of consecutive naturals, for example, 5328096 + ... + 18924113.

It is an arithmetic number, because the mean of its divisors is an integer number (27477802434420).

Almost surely, 2^{164866735051881} is an apocalyptic number.

It is an amenable number.

164866735051881 is a deficient number, since it is larger than the sum of its proper divisors (54955684423479).

164866735051881 is a wasteful number, since it uses less digits than its factorization.

164866735051881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26518215.

The product of its (nonzero) digits is 232243200, while the sum is 69.

The spelling of 164866735051881 in words is "one hundred sixty-four trillion, eight hundred sixty-six billion, seven hundred thirty-five million, fifty-one thousand, eight hundred eighty-one".