164511011111 has 8 divisors (see below), whose sum is σ = 180698593920. Its totient is φ = 149076339192.

The previous prime is 164511011101. The next prime is 164511011131. The reversal of 164511011111 is 111110115461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164511011111 is a prime.

It is a super-3 number, since 3×164511011111³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164511011101) 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, 188227265 + ... + 188228138.

It is an arithmetic number, because the mean of its divisors is an integer number (22587324240).

Almost surely, 2^164511011111 is an apocalyptic number.

164511011111 is a deficient number, since it is larger than the sum of its proper divisors (16187582809).

164511011111 is a wasteful number, since it uses less digits than its factorization.

164511011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376455445.

The product of its (nonzero) digits is 120, while the sum is 23.

Adding to 164511011111 its reverse (111110115461), we get a palindrome (275621126572).

The spelling of 164511011111 in words is "one hundred sixty-four billion, five hundred eleven million, eleven thousand, one hundred eleven".