8656438000 has 240 divisors, whose sum is σ = 25635636000. Its totient is φ = 2811110400.

The previous prime is 8656437947. The next prime is 8656438009. The reversal of 8656438000 is 8346568.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8656438009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1859676 + ... + 1864324.

It is an arithmetic number, because the mean of its divisors is an integer number (106815150).

Almost surely, 2^8656438000 is an apocalyptic number.

8656438000 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 8656438000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12817818000).

8656438000 is an abundant number, since it is smaller than the sum of its proper divisors (16979198000).

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

8656438000 is a wasteful number, since it uses less digits than its factorization.

8656438000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4705 (or 4682 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 8656438000 is about 93039.9806534804. The cubic root of 8656438000 is about 2053.2716349689.

The spelling of 8656438000 in words is "eight billion, six hundred fifty-six million, four hundred thirty-eight thousand".