345621263424 has 112 divisors (see below), whose sum is σ = 918166596480. Its totient is φ = 114740654080.

The previous prime is 345621263423. The next prime is 345621263459. The reversal of 345621263424 is 424362126543.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (345621263423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50312662 + ... + 50319530.

It is an arithmetic number, because the mean of its divisors is an integer number (8197916040).

Almost surely, 2^345621263424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345621263424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459083298240).

345621263424 is an abundant number, since it is smaller than the sum of its proper divisors (572545333056).

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

345621263424 is a wasteful number, since it uses less digits than its factorization.

345621263424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7908 (or 7898 counting only the distinct ones).

The product of its digits is 829440, while the sum is 42.

Adding to 345621263424 its reverse (424362126543), we get a palindrome (769983389967).

The spelling of 345621263424 in words is "three hundred forty-five billion, six hundred twenty-one million, two hundred sixty-three thousand, four hundred twenty-four".