646105015106 has 8 divisors (see below), whose sum is σ = 969169650240. Its totient is φ = 323048465028.

The previous prime is 646105015097. The next prime is 646105015121. The reversal of 646105015106 is 601510501646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1817366 + ... + 2143601.

It is an arithmetic number, because the mean of its divisors is an integer number (121146206280).

Almost surely, 2^646105015106 is an apocalyptic number.

646105015106 is a deficient number, since it is larger than the sum of its proper divisors (323064635134).

646105015106 is a wasteful number, since it uses less digits than its factorization.

646105015106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042528.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 646105015106 in words is "six hundred forty-six billion, one hundred five million, fifteen thousand, one hundred six".