164342611123540 has 12 divisors (see below), whose sum is σ = 345119483359476. Its totient is φ = 65737044449408.

The previous prime is 164342611123519. The next prime is 164342611123589. The reversal of 164342611123540 is 45321116243461.

It can be written as a sum of positive squares in 2 ways, for example, as 67376287389636 + 96966323733904 = 8208306^2 + 9847148^2 .

It is a super-2 number, since 2×164342611123540² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 4108565278069 + ... + 4108565278108.

It is an arithmetic number, because the mean of its divisors is an integer number (28759956946623).

Almost surely, 2^{164342611123540} is an apocalyptic number.

164342611123540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164342611123540 is an abundant number, since it is smaller than the sum of its proper divisors (180776872235936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164342611123540 is a wasteful number, since it uses less digits than its factorization.

164342611123540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8217130556186 (or 8217130556184 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 164342611123540 in words is "one hundred sixty-four trillion, three hundred forty-two billion, six hundred eleven million, one hundred twenty-three thousand, five hundred forty".