853423393680 has 800 divisors, whose sum is σ = 3665611635840. Its totient is φ = 180920770560.

The previous prime is 853423393651. The next prime is 853423393703. The reversal of 853423393680 is 86393324358.

It is a happy number.

853423393680 is a `hidden beast` number, since 8 + 53 + 423 + 3 + 93 + 6 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 17581924 + ... + 17630396.

Almost surely, 2^853423393680 is an apocalyptic number.

853423393680 is a gapful number since it is divisible by the number (80) 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 853423393680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1832805817920).

853423393680 is an abundant number, since it is smaller than the sum of its proper divisors (2812188242160).

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

853423393680 is a wasteful number, since it uses less digits than its factorization.

853423393680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48541 (or 48526 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 54.

The spelling of 853423393680 in words is "eight hundred fifty-three billion, four hundred twenty-three million, three hundred ninety-three thousand, six hundred eighty".