164987111552 has 32 divisors (see below), whose sum is σ = 328761811020. Its totient is φ = 82474343424.

The previous prime is 164987111501. The next prime is 164987111561. The reversal of 164987111552 is 255111789461.

It can be written as a sum of positive squares in 2 ways, for example, as 148114140736 + 16872970816 = 384856^2 + 129896^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 164987111552.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409778 + ... + 705614.

Almost surely, 2^164987111552 is an apocalyptic number.

It is an amenable number.

164987111552 is a deficient number, since it is larger than the sum of its proper divisors (163774699468).

164987111552 is an equidigital number, since it uses as much as digits as its factorization.

164987111552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300208 (or 300196 counting only the distinct ones).

The product of its digits is 604800, while the sum is 50.

The spelling of 164987111552 in words is "one hundred sixty-four billion, nine hundred eighty-seven million, one hundred eleven thousand, five hundred fifty-two".