351430664520 has 256 divisors, whose sum is σ = 1144076129280. Its totient is φ = 85847040000.

The previous prime is 351430664513. The next prime is 351430664521. The reversal of 351430664520 is 25466034153.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (351430664521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 117103020 + ... + 117106020.

It is an arithmetic number, because the mean of its divisors is an integer number (4469047380).

Almost surely, 2^351430664520 is an apocalyptic number.

351430664520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351430664520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572038064640).

351430664520 is an abundant number, since it is smaller than the sum of its proper divisors (792645464760).

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

351430664520 is a wasteful number, since it uses less digits than its factorization.

351430664520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3576 (or 3572 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 351430664520 its reverse (25466034153), we get a palindrome (376896698673).

The spelling of 351430664520 in words is "three hundred fifty-one billion, four hundred thirty million, six hundred sixty-four thousand, five hundred twenty".