647771243270 has 32 divisors (see below), whose sum is σ = 1232491507200. Its totient is φ = 244444114656.

The previous prime is 647771243269. The next prime is 647771243321. The reversal of 647771243270 is 72342177746.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7087064 + ... + 7177883.

It is an arithmetic number, because the mean of its divisors is an integer number (38515359600).

Almost surely, 2^647771243270 is an apocalyptic number.

647771243270 is a deficient number, since it is larger than the sum of its proper divisors (584720263930).

647771243270 is a wasteful number, since it uses less digits than its factorization.

647771243270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14265212.

The product of its (nonzero) digits is 2765952, while the sum is 50.

The spelling of 647771243270 in words is "six hundred forty-seven billion, seven hundred seventy-one million, two hundred forty-three thousand, two hundred seventy".