351661020224 has 14 divisors (see below), whose sum is σ = 697827337134. Its totient is φ = 175830510080.

The previous prime is 351661020203. The next prime is 351661020241. The reversal of 351661020224 is 422020166153.

It can be written as a sum of positive squares in only one way, i.e., 335843430400 + 15817589824 = 579520^2 + 125768^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2747351657 + ... + 2747351784.

Almost surely, 2^351661020224 is an apocalyptic number.

It is an amenable number.

351661020224 is a deficient number, since it is larger than the sum of its proper divisors (346166316910).

351661020224 is an equidigital number, since it uses as much as digits as its factorization.

351661020224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5494703453 (or 5494703443 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 351661020224 its reverse (422020166153), we get a palindrome (773681186377).

The spelling of 351661020224 in words is "three hundred fifty-one billion, six hundred sixty-one million, twenty thousand, two hundred twenty-four".