164203544340 has 144 divisors (see below), whose sum is σ = 575327188800. Its totient is φ = 37465328640.

The previous prime is 164203544321. The next prime is 164203544359. The reversal of 164203544340 is 43445302461.

164203544340 is a `hidden beast` number, since 1 + 6 + 4 + 203 + 5 + 443 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (164203544321) and next prime (164203544359).

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 = 164203544295 and 164203544304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2405490 + ... + 2472809.

It is an arithmetic number, because the mean of its divisors is an integer number (3995327700).

Almost surely, 2^164203544340 is an apocalyptic number.

164203544340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164203544340 is an abundant number, since it is smaller than the sum of its proper divisors (411123644460).

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

164203544340 is a wasteful number, since it uses less digits than its factorization.

164203544340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4878342 (or 4878337 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The spelling of 164203544340 in words is "one hundred sixty-four billion, two hundred three million, five hundred forty-four thousand, three hundred forty".