164173334920 has 256 divisors, whose sum is σ = 454263552000. Its totient is φ = 52201304064.

The previous prime is 164173334917. The next prime is 164173334939. The reversal of 164173334920 is 29433371461.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23731302 + ... + 23738218.

It is an arithmetic number, because the mean of its divisors is an integer number (1774467000).

Almost surely, 2^164173334920 is an apocalyptic number.

164173334920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164173334920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227131776000).

164173334920 is an abundant number, since it is smaller than the sum of its proper divisors (290090217080).

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

164173334920 is a wasteful number, since it uses less digits than its factorization.

164173334920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7080 (or 7076 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 43.

The spelling of 164173334920 in words is "one hundred sixty-four billion, one hundred seventy-three million, three hundred thirty-four thousand, nine hundred twenty".