12354540312 has 32 divisors (see below), whose sum is σ = 30890242800. Its totient is φ = 4117661184.

The previous prime is 12354540311. The next prime is 12354540323. The reversal of 12354540312 is 21304545321.

It is a self number, because there is not a number n which added to its sum of digits gives 12354540312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12354540311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194364 + ... + 249972.

Almost surely, 2^12354540312 is an apocalyptic number.

12354540312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12354540312 is an abundant number, since it is smaller than the sum of its proper divisors (18535702488).

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

12354540312 is a wasteful number, since it uses less digits than its factorization.

12354540312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64875 (or 64871 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 12354540312 in words is "twelve billion, three hundred fifty-four million, five hundred forty thousand, three hundred twelve".