12340561679 has 8 divisors (see below), whose sum is σ = 12560890368. Its totient is φ = 12122157600.

The previous prime is 12340561637. The next prime is 12340561687. The reversal of 12340561679 is 97616504321.

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 12340561679 - 2¹² = 12340557583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340561609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468212 + ... + 493865.

It is an arithmetic number, because the mean of its divisors is an integer number (1570111296).

Almost surely, 2^12340561679 is an apocalyptic number.

12340561679 is a deficient number, since it is larger than the sum of its proper divisors (220328689).

12340561679 is a wasteful number, since it uses less digits than its factorization.

12340561679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962305.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 12340561679 in words is "twelve billion, three hundred forty million, five hundred sixty-one thousand, six hundred seventy-nine".