164606021512 has 64 divisors (see below), whose sum is σ = 327687120000. Its totient is φ = 77349364224.

The previous prime is 164606021407. The next prime is 164606021513. The reversal of 164606021512 is 215120606461.

It is a super-2 number, since 2×164606021512² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164606021513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33097458 + ... + 33102430.

It is an arithmetic number, because the mean of its divisors is an integer number (5120111250).

Almost surely, 2^164606021512 is an apocalyptic number.

It is an amenable number.

164606021512 is a deficient number, since it is larger than the sum of its proper divisors (163081098488).

164606021512 is a wasteful number, since it uses less digits than its factorization.

164606021512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110 (or 8106 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 164606021512 its reverse (215120606461), we get a palindrome (379726627973).

The spelling of 164606021512 in words is "one hundred sixty-four billion, six hundred six million, twenty-one thousand, five hundred twelve".