164968181240 has 32 divisors (see below), whose sum is σ = 371241005760. Its totient is φ = 65976144000.

The previous prime is 164968181219. The next prime is 164968181291. The reversal of 164968181240 is 42181869461.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105536 + ... + 584015.

It is an arithmetic number, because the mean of its divisors is an integer number (11601281430).

Almost surely, 2^164968181240 is an apocalyptic number.

164968181240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164968181240 is an abundant number, since it is smaller than the sum of its proper divisors (206272824520).

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

164968181240 is a wasteful number, since it uses less digits than its factorization.

164968181240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695543 (or 695539 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 164968181240 in words is "one hundred sixty-four billion, nine hundred sixty-eight million, one hundred eighty-one thousand, two hundred forty".