344040121530 has 72 divisors (see below), whose sum is σ = 1040545850292. Its totient is φ = 78637741056.

The previous prime is 344040121517. The next prime is 344040121591. The reversal of 344040121530 is 35121040443.

It is a happy number.

344040121530 is a `hidden beast` number, since 3 + 4 + 4 + 0 + 4 + 0 + 121 + 530 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 311869753209 + 32170368321 = 558453^2 + 179361^2 .

It is a junction number, because it is equal to n+sod(n) for n = 344040121494 and 344040121503.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 39002407 + ... + 39011226.

Almost surely, 2^344040121530 is an apocalyptic number.

344040121530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

344040121530 is an abundant number, since it is smaller than the sum of its proper divisors (696505728762).

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

344040121530 is a wasteful number, since it uses less digits than its factorization.

344040121530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78013660 (or 78013650 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 344040121530 its reverse (35121040443), we get a palindrome (379161161973).

The spelling of 344040121530 in words is "three hundred forty-four billion, forty million, one hundred twenty-one thousand, five hundred thirty".