646071541208 has 32 divisors (see below), whose sum is σ = 1233179232960. Its totient is φ = 317252881440.

The previous prime is 646071541183. The next prime is 646071541211. The reversal of 646071541208 is 802145170646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1643366 + ... + 1998197.

It is an arithmetic number, because the mean of its divisors is an integer number (38536851030).

Almost surely, 2^646071541208 is an apocalyptic number.

It is an amenable number.

646071541208 is a deficient number, since it is larger than the sum of its proper divisors (587107691752).

646071541208 is a wasteful number, since it uses less digits than its factorization.

646071541208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641967 (or 3641963 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 646071541208 in words is "six hundred forty-six billion, seventy-one million, five hundred forty-one thousand, two hundred eight".