164456486400 has 240 divisors, whose sum is σ = 545240847888. Its totient is φ = 43696128000.

The previous prime is 164456486377. The next prime is 164456486401. The reversal of 164456486400 is 4684654461.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 164456486400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164456486401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10782780 + ... + 10798020.

Almost surely, 2^164456486400 is an apocalyptic number.

164456486400 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 164456486400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272620423944).

164456486400 is an abundant number, since it is smaller than the sum of its proper divisors (380784361488).

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

164456486400 is a wasteful number, since it uses less digits than its factorization.

164456486400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15553 (or 15532 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 48.

The spelling of 164456486400 in words is "one hundred sixty-four billion, four hundred fifty-six million, four hundred eighty-six thousand, four hundred".