646260350120 has 64 divisors (see below), whose sum is σ = 1812886185600. Its totient is φ = 201431796480.

The previous prime is 646260350063. The next prime is 646260350137. The reversal of 646260350120 is 21053062646.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

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 15 ways as a sum of consecutive naturals, for example, 104909315 + ... + 104915474.

It is an arithmetic number, because the mean of its divisors is an integer number (28326346650).

Almost surely, 2^646260350120 is an apocalyptic number.

It is an amenable number.

646260350120 is an abundant number, since it is smaller than the sum of its proper divisors (1166625835480).

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

646260350120 is a wasteful number, since it uses less digits than its factorization.

646260350120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209824818 (or 209824814 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 646260350120 in words is "six hundred forty-six billion, two hundred sixty million, three hundred fifty thousand, one hundred twenty".