664023454200 has 144 divisors (see below), whose sum is σ = 2277459456480. Its totient is φ = 173305390080.

The previous prime is 664023454189. The next prime is 664023454253. The reversal of 664023454200 is 2454320466.

664023454200 is a `hidden beast` number, since 6 + 6 + 402 + 3 + 45 + 4 + 200 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3839889 + ... + 4009088.

It is an arithmetic number, because the mean of its divisors is an integer number (15815690670).

Almost surely, 2^664023454200 is an apocalyptic number.

664023454200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

664023454200 is an abundant number, since it is smaller than the sum of its proper divisors (1613436002280).

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

664023454200 is a wasteful number, since it uses less digits than its factorization.

664023454200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7849046 (or 7849034 counting only the distinct ones).

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

Adding to 664023454200 its reverse (2454320466), we get a palindrome (666477774666).

The spelling of 664023454200 in words is "six hundred sixty-four billion, twenty-three million, four hundred fifty-four thousand, two hundred".