646843513130 has 16 divisors (see below), whose sum is σ = 1165636933344. Its totient is φ = 258444380880.

The previous prime is 646843513117. The next prime is 646843513153. The reversal of 646843513130 is 31315348646.

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 7 ways as a sum of consecutive naturals, for example, 36618776 + ... + 36636435.

It is an arithmetic number, because the mean of its divisors is an integer number (72852308334).

Almost surely, 2^646843513130 is an apocalyptic number.

646843513130 is a deficient number, since it is larger than the sum of its proper divisors (518793420214).

646843513130 is a wasteful number, since it uses less digits than its factorization.

646843513130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73256101.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 646843513130 in words is "six hundred forty-six billion, eight hundred forty-three million, five hundred thirteen thousand, one hundred thirty".