646505352263350 has 12 divisors (see below), whose sum is σ = 1202499955209924. Its totient is φ = 258602140905320.

The previous prime is 646505352263237. The next prime is 646505352263363. The reversal of 646505352263350 is 53362253505646.

It is a junction number, because it is equal to n+sod(n) for n = 646505352263291 and 646505352263300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6465053522584 + ... + 6465053522683.

It is an arithmetic number, because the mean of its divisors is an integer number (100208329600827).

Almost surely, 2^{646505352263350} is an apocalyptic number.

646505352263350 is a deficient number, since it is larger than the sum of its proper divisors (555994602946574).

646505352263350 is a wasteful number, since it uses less digits than its factorization.

646505352263350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12930107045279 (or 12930107045274 counting only the distinct ones).

The product of its (nonzero) digits is 58320000, while the sum is 55.

The spelling of 646505352263350 in words is "six hundred forty-six trillion, five hundred five billion, three hundred fifty-two million, two hundred sixty-three thousand, three hundred fifty".