12340450544 has 40 divisors (see below), whose sum is σ = 24970261920. Its totient is φ = 5896965888.

The previous prime is 12340450523. The next prime is 12340450553. The reversal of 12340450544 is 44505404321.

It is a self number, because there is not a number n which added to its sum of digits gives 12340450544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441662 + ... + 468770.

It is an arithmetic number, because the mean of its divisors is an integer number (624256548).

Almost surely, 2^12340450544 is an apocalyptic number.

It is an amenable number.

12340450544 is an abundant number, since it is smaller than the sum of its proper divisors (12629811376).

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

12340450544 is a wasteful number, since it uses less digits than its factorization.

12340450544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28377 (or 28371 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 12340450544 its reverse (44505404321), we get a palindrome (56845854865).

The spelling of 12340450544 in words is "twelve billion, three hundred forty million, four hundred fifty thousand, five hundred forty-four".