8738166656 has 64 divisors (see below), whose sum is σ = 17900008560. Its totient is φ = 4246425600.

The previous prime is 8738166653. The next prime is 8738166677. The reversal of 8738166656 is 6566618378.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8738166653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450691 + ... + 1456701.

Almost surely, 2^8738166656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8738166656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8950004280).

8738166656 is an abundant number, since it is smaller than the sum of its proper divisors (9161841904).

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

8738166656 is a wasteful number, since it uses less digits than its factorization.

8738166656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6343 (or 6331 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The square root of 8738166656 is about 93478.1613854273. The cubic root of 8738166656 is about 2059.7133053748.

The spelling of 8738166656 in words is "eight billion, seven hundred thirty-eight million, one hundred sixty-six thousand, six hundred fifty-six".