6638816147180 has 72 divisors (see below), whose sum is σ = 16225477644096. Its totient is φ = 2275071052800.

The previous prime is 6638816147081. The next prime is 6638816147191. The reversal of 6638816147180 is 817416188366.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 411725 + ... + 3667035.

It is an arithmetic number, because the mean of its divisors is an integer number (225353856168).

Almost surely, 2^{6638816147180} 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 6638816147180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8112738822048).

6638816147180 is an abundant number, since it is smaller than the sum of its proper divisors (9586661496916).

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

6638816147180 is a wasteful number, since it uses less digits than its factorization.

6638816147180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257415 (or 3257406 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 59.

The spelling of 6638816147180 in words is "six trillion, six hundred thirty-eight billion, eight hundred sixteen million, one hundred forty-seven thousand, one hundred eighty".