12355344240 has 80 divisors (see below), whose sum is σ = 39966870528. Its totient is φ = 3151506688.

The previous prime is 12355344233. The next prime is 12355344257. The reversal of 12355344240 is 4244355321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1113624 + ... + 1124663.

Almost surely, 2^12355344240 is an apocalyptic number.

12355344240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12355344240 is an abundant number, since it is smaller than the sum of its proper divisors (27611526288).

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

12355344240 is a wasteful number, since it uses less digits than its factorization.

12355344240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238326 (or 2238320 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 12355344240 its reverse (4244355321), we get a palindrome (16599699561).

The spelling of 12355344240 in words is "twelve billion, three hundred fifty-five million, three hundred forty-four thousand, two hundred forty".