12461607521 has 8 divisors (see below), whose sum is σ = 13606104288. Its totient is φ = 11319048000.

The previous prime is 12461607451. The next prime is 12461607551. The reversal of 12461607521 is 12570616421.

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

It is a cyclic number.

It is not a de Polignac number, because 12461607521 - 2¹⁰ = 12461606497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12461607551) 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, 470840 + ... + 496601.

It is an arithmetic number, because the mean of its divisors is an integer number (1700763036).

Almost surely, 2^12461607521 is an apocalyptic number.

12461607521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12461607521 is a deficient number, since it is larger than the sum of its proper divisors (1144496767).

12461607521 is a wasteful number, since it uses less digits than its factorization.

12461607521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968623.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 12461607521 in words is "twelve billion, four hundred sixty-one million, six hundred seven thousand, five hundred twenty-one".