12531454405 has 8 divisors (see below), whose sum is σ = 15056292384. Its totient is φ = 10012798800.

The previous prime is 12531454399. The next prime is 12531454423. The reversal of 12531454405 is 50445413521.

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

It is not a de Polignac number, because 12531454405 - 2¹⁹ = 12530930117 is a prime.

It is a Duffinian 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, 1541131 + ... + 1549240.

It is an arithmetic number, because the mean of its divisors is an integer number (1882036548).

Almost surely, 2^12531454405 is an apocalyptic number.

It is an amenable number.

12531454405 is a deficient number, since it is larger than the sum of its proper divisors (2524837979).

12531454405 is an equidigital number, since it uses as much as digits as its factorization.

12531454405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091187.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 12531454405 its reverse (50445413521), we get a palindrome (62976867926).

The spelling of 12531454405 in words is "twelve billion, five hundred thirty-one million, four hundred fifty-four thousand, four hundred five".