662143206520 has 32 divisors (see below), whose sum is σ = 1493053974720. Its totient is φ = 264282747520.

The previous prime is 662143206479. The next prime is 662143206539. The reversal of 662143206520 is 25602341266.

It is a self number, because there is not a number n which added to its sum of digits gives 662143206520.

It is a congruent number.

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, 17935552 + ... + 17972431.

It is an arithmetic number, because the mean of its divisors is an integer number (46657936710).

Almost surely, 2^662143206520 is an apocalyptic number.

It is an amenable number.

662143206520 is an abundant number, since it is smaller than the sum of its proper divisors (830910768200).

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

662143206520 is a wasteful number, since it uses less digits than its factorization.

662143206520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35908455 (or 35908451 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 662143206520 its reverse (25602341266), we get a palindrome (687745547786).

The spelling of 662143206520 in words is "six hundred sixty-two billion, one hundred forty-three million, two hundred six thousand, five hundred twenty".