647016728552 has 32 divisors (see below), whose sum is σ = 1243306342080. Its totient is φ = 315491850240.

The previous prime is 647016728539. The next prime is 647016728609. The reversal of 647016728552 is 255827610746.

It is a super-2 number, since 2×647016728552² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 647016728494 and 647016728503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1246628 + ... + 1687635.

It is an arithmetic number, because the mean of its divisors is an integer number (38853323190).

Almost surely, 2^647016728552 is an apocalyptic number.

It is an amenable number.

647016728552 is a deficient number, since it is larger than the sum of its proper divisors (596289613528).

647016728552 is a wasteful number, since it uses less digits than its factorization.

647016728552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934953 (or 2934949 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 647016728552 in words is "six hundred forty-seven billion, sixteen million, seven hundred twenty-eight thousand, five hundred fifty-two".