8423743680 has 672 divisors, whose sum is σ = 33507639360. Its totient is φ = 1923317760.

The previous prime is 8423743663. The next prime is 8423743687. The reversal of 8423743680 is 863473248.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (8423743687) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 48692074 + ... + 48692246.

Almost surely, 2^8423743680 is an apocalyptic number.

8423743680 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 8423743680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16753819680).

8423743680 is an abundant number, since it is smaller than the sum of its proper divisors (25083895680).

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

8423743680 is a wasteful number, since it uses less digits than its factorization.

8423743680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The square root of 8423743680 is about 91780.9548871660. The cubic root of 8423743680 is about 2034.7062284834.

The spelling of 8423743680 in words is "eight billion, four hundred twenty-three million, seven hundred forty-three thousand, six hundred eighty".