647133985386 has 48 divisors (see below), whose sum is σ = 1606655169600. Its totient is φ = 184407560064.

The previous prime is 647133985373. The next prime is 647133985403. The reversal of 647133985386 is 683589331746.

647133985386 is a `hidden beast` number, since 6 + 4 + 7 + 1 + 3 + 3 + 98 + 538 + 6 = 666.

647133985386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6727951 + ... + 6823458.

It is an arithmetic number, because the mean of its divisors is an integer number (33471982700).

Almost surely, 2^647133985386 is an apocalyptic number.

647133985386 is an abundant number, since it is smaller than the sum of its proper divisors (959521184214).

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

647133985386 is a wasteful number, since it uses less digits than its factorization.

647133985386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13551803 (or 13551800 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 63.

The spelling of 647133985386 in words is "six hundred forty-seven billion, one hundred thirty-three million, nine hundred eighty-five thousand, three hundred eighty-six".