647147133412 has 24 divisors (see below), whose sum is σ = 1291366001016. Its totient is φ = 281113686528.

The previous prime is 647147133371. The next prime is 647147133431. The reversal of 647147133412 is 214331741746.

It can be written as a sum of positive squares in 4 ways, for example, as 272375434816 + 374771698596 = 521896^2 + 612186^2 .

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, 366032563 + ... + 366034330.

It is an arithmetic number, because the mean of its divisors is an integer number (53806916709).

Almost surely, 2^647147133412 is an apocalyptic number.

It is an amenable number.

647147133412 is a deficient number, since it is larger than the sum of its proper divisors (644218867604).

647147133412 is a wasteful number, since it uses less digits than its factorization.

647147133412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732066927 (or 732066925 counting only the distinct ones).

The product of its digits is 338688, while the sum is 43.

The spelling of 647147133412 in words is "six hundred forty-seven billion, one hundred forty-seven million, one hundred thirty-three thousand, four hundred twelve".