344640252450 has 96 divisors (see below), whose sum is σ = 921307032576. Its totient is φ = 84755957760.

The previous prime is 344640252419. The next prime is 344640252457. The reversal of 344640252450 is 54252046443.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 344640252399 and 344640252408.

It is not an unprimeable number, because it can be changed into a prime (344640252457) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2038354 + ... + 2200946.

It is an arithmetic number, because the mean of its divisors is an integer number (9596948256).

Almost surely, 2^344640252450 is an apocalyptic number.

344640252450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 344640252450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460653516288).

344640252450 is an abundant number, since it is smaller than the sum of its proper divisors (576666780126).

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

344640252450 is a wasteful number, since it uses less digits than its factorization.

344640252450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163708 (or 163703 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 39.

Adding to 344640252450 its reverse (54252046443), we get a palindrome (398892298893).

The spelling of 344640252450 in words is "three hundred forty-four billion, six hundred forty million, two hundred fifty-two thousand, four hundred fifty".