164989044000 has 576 divisors, whose sum is σ = 640986877440. Its totient is φ = 39859200000.

The previous prime is 164989043983. The next prime is 164989044013. The reversal of 164989044000 is 440989461.

164989044000 is a `hidden beast` number, since 164 + 9 + 89 + 0 + 4 + 400 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 158795481 + ... + 158796519.

It is an arithmetic number, because the mean of its divisors is an integer number (1112824440).

Almost surely, 2^164989044000 is an apocalyptic number.

164989044000 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 164989044000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320493438720).

164989044000 is an abundant number, since it is smaller than the sum of its proper divisors (475997833440).

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

164989044000 is a wasteful number, since it uses less digits than its factorization.

164989044000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482 (or 1461 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 164989044000 in words is "one hundred sixty-four billion, nine hundred eighty-nine million, forty-four thousand".