164646040620144 has 20 divisors (see below), whose sum is σ = 425335604935496. Its totient is φ = 54882013540032.

The previous prime is 164646040620143. The next prime is 164646040620157. The reversal of 164646040620144 is 441026040646461.

It is a happy number.

164646040620144 is digitally balanced in base 2, 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 (48), and also a Moran number because the ratio is a prime number: 3430125846253 = 164646040620144 / (1 + 6 + 4 + 6 + 4 + 6 + 0 + 4 + 0 + 6 + 2 + 0 + 1 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 164646040620093 and 164646040620102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164646040620143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1715062923079 + ... + 1715062923174.

Almost surely, 2^{164646040620144} is an apocalyptic number.

It is an amenable number.

164646040620144 is an abundant number, since it is smaller than the sum of its proper divisors (260689564315352).

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

164646040620144 is a wasteful number, since it uses less digits than its factorization.

164646040620144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430125846264 (or 3430125846258 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 48.

The spelling of 164646040620144 in words is "one hundred sixty-four trillion, six hundred forty-six billion, forty million, six hundred twenty thousand, one hundred forty-four".