647104047744 has 768 divisors, whose sum is σ = 2335832640000. Its totient is φ = 156477726720.

The previous prime is 647104047727. The next prime is 647104047791. The reversal of 647104047744 is 447740401746.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 647104047693 and 647104047702.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 232018702 + ... + 232021490.

It is an arithmetic number, because the mean of its divisors is an integer number (3041448750).

Almost surely, 2^647104047744 is an apocalyptic number.

647104047744 is a gapful number since it is divisible by the number (64) 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 647104047744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167916320000).

647104047744 is an abundant number, since it is smaller than the sum of its proper divisors (1688728592256).

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

647104047744 is a wasteful number, since it uses less digits than its factorization.

647104047744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909 (or 2890 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 48.

The spelling of 647104047744 in words is "six hundred forty-seven billion, one hundred four million, forty-seven thousand, seven hundred forty-four".