164434656136 has 16 divisors (see below), whose sum is σ = 308319624540. Its totient is φ = 82216089600.

The previous prime is 164434656031. The next prime is 164434656137. The reversal of 164434656136 is 631656434461.

It can be written as a sum of positive squares in 2 ways, for example, as 86844553636 + 77590102500 = 294694^2 + 278550^2 .

It is a super-3 number, since 3×164434656136³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 164434656136.

It is not an unprimeable number, because it can be changed into a prime (164434656137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664600 + ... + 877816.

Almost surely, 2^164434656136 is an apocalyptic number.

It is an amenable number.

164434656136 is a deficient number, since it is larger than the sum of its proper divisors (143884968404).

164434656136 is a wasteful number, since it uses less digits than its factorization.

164434656136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309624 (or 309620 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 49.

The spelling of 164434656136 in words is "one hundred sixty-four billion, four hundred thirty-four million, six hundred fifty-six thousand, one hundred thirty-six".