647108136000 has 896 divisors, whose sum is σ = 2467059978240. Its totient is φ = 165888000000.

The previous prime is 647108135977. The next prime is 647108136001. The reversal of 647108136000 is 631801746.

647108136000 is a `hidden beast` number, since 6 + 47 + 1 + 0 + 8 + 1 + 3 + 600 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (647108136001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1613735800 + ... + 1613736200.

Almost surely, 2^647108136000 is an apocalyptic number.

647108136000 is a gapful number since it is divisible by the number (60) 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 647108136000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1233529989120).

647108136000 is an abundant number, since it is smaller than the sum of its proper divisors (1819951842240).

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

647108136000 is a wasteful number, since it uses less digits than its factorization.

647108136000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

Adding to 647108136000 its reverse (631801746), we get a palindrome (647739937746).

The spelling of 647108136000 in words is "six hundred forty-seven billion, one hundred eight million, one hundred thirty-six thousand".