12347840554 has 24 divisors (see below), whose sum is σ = 22813120260. Its totient is φ = 4980640896.

The previous prime is 12347840539. The next prime is 12347840579. The reversal of 12347840554 is 45504874321.

It can be written as a sum of positive squares in 2 ways, for example, as 11993535225 + 354305329 = 109515^2 + 18823^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12347840554.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3704169 + ... + 3707500.

Almost surely, 2^12347840554 is an apocalyptic number.

12347840554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12347840554 is a deficient number, since it is larger than the sum of its proper divisors (10465279706).

12347840554 is a wasteful number, since it uses less digits than its factorization.

12347840554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7411702 (or 7411695 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 43.

The spelling of 12347840554 in words is "twelve billion, three hundred forty-seven million, eight hundred forty thousand, five hundred fifty-four".