12351040540 has 24 divisors (see below), whose sum is σ = 25983774432. Its totient is φ = 4931542080.

The previous prime is 12351040529. The next prime is 12351040657. The reversal of 12351040540 is 4504015321.

It is a happy number.

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, 543216 + ... + 565495.

It is an arithmetic number, because the mean of its divisors is an integer number (1082657268).

Almost surely, 2^12351040540 is an apocalyptic number.

12351040540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12351040540 is an abundant number, since it is smaller than the sum of its proper divisors (13632733892).

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

12351040540 is a wasteful number, since it uses less digits than its factorization.

12351040540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109277 (or 1109275 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 12351040540 its reverse (4504015321), we get a palindrome (16855055861).

The spelling of 12351040540 in words is "twelve billion, three hundred fifty-one million, forty thousand, five hundred forty".