164203035840 has 224 divisors, whose sum is σ = 582023646720. Its totient is φ = 43579468800.

The previous prime is 164203035803. The next prime is 164203035847. The reversal of 164203035840 is 48530302461.

164203035840 is a `hidden beast` number, since 1 + 6 + 42 + 0 + 30 + 3 + 584 + 0 = 666.

164203035840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 164203035795 and 164203035804.

It is not an unprimeable number, because it can be changed into a prime (164203035847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1778005 + ... + 1868075.

Almost surely, 2^164203035840 is an apocalyptic number.

164203035840 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 164203035840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291011823360).

164203035840 is an abundant number, since it is smaller than the sum of its proper divisors (417820610880).

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

164203035840 is a wasteful number, since it uses less digits than its factorization.

164203035840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90308 (or 90292 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 164203035840 in words is "one hundred sixty-four billion, two hundred three million, thirty-five thousand, eight hundred forty".