12423400015555 has 8 divisors (see below), whose sum is σ = 15096789892800. Its totient is φ = 9812913429696.

The previous prime is 12423400015529. The next prime is 12423400015591. The reversal of 12423400015555 is 55551000432421.

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 12423400015555 - 2⁷ = 12423400015427 is a prime.

It is an unprimeable number.

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, 15725822410 + ... + 15725823199.

It is an arithmetic number, because the mean of its divisors is an integer number (1887098736600).

Almost surely, 2^{12423400015555} is an apocalyptic number.

12423400015555 is a deficient number, since it is larger than the sum of its proper divisors (2673389877245).

12423400015555 is an equidigital number, since it uses as much as digits as its factorization.

12423400015555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31451645693.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 12423400015555 its reverse (55551000432421), we get a palindrome (67974400447976).

The spelling of 12423400015555 in words is "twelve trillion, four hundred twenty-three billion, four hundred million, fifteen thousand, five hundred fifty-five".