646610642302350 has 192 divisors, whose sum is σ = 1771938828870912. Its totient is φ = 154741520640000.

The previous prime is 646610642302337. The next prime is 646610642302423. The reversal of 646610642302350 is 53203246016646.

It is a self number, because there is not a number n which added to its sum of digits gives 646610642302350.

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 95 ways as a sum of consecutive naturals, for example, 50404297 + ... + 61917803.

It is an arithmetic number, because the mean of its divisors is an integer number (9228848067036).

Almost surely, 2^{646610642302350} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646610642302350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885969414435456).

646610642302350 is an abundant number, since it is smaller than the sum of its proper divisors (1125328186568562).

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

646610642302350 is a wasteful number, since it uses less digits than its factorization.

646610642302350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11513971 (or 11513966 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 48.

Adding to 646610642302350 its reverse (53203246016646), we get a palindrome (699813888318996).

The spelling of 646610642302350 in words is "six hundred forty-six trillion, six hundred ten billion, six hundred forty-two million, three hundred two thousand, three hundred fifty".