12405312554 has 8 divisors (see below), whose sum is σ = 18616715460. Its totient is φ = 6199740736.

The previous prime is 12405312547. The next prime is 12405312593. The reversal of 12405312554 is 45521350421.

It can be written as a sum of positive squares in 2 ways, for example, as 11648237329 + 757075225 = 107927^2 + 27515^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12405312554.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1452449 + ... + 1460964.

Almost surely, 2^12405312554 is an apocalyptic number.

12405312554 is a deficient number, since it is larger than the sum of its proper divisors (6211402906).

12405312554 is a wasteful number, since it uses less digits than its factorization.

12405312554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915544.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 12405312554 its reverse (45521350421), we get a palindrome (57926662975).

The spelling of 12405312554 in words is "twelve billion, four hundred five million, three hundred twelve thousand, five hundred fifty-four".