12352431421505 has 16 divisors (see below), whose sum is σ = 16941638941824. Its totient is φ = 8469657907200.

The previous prime is 12352431421501. The next prime is 12352431421513. The reversal of 12352431421505 is 50512413425321.

It is not a de Polignac number, because 12352431421505 - 2² = 12352431421501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12352431421501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11581571 + ... + 12603080.

It is an arithmetic number, because the mean of its divisors is an integer number (1058852433864).

Almost surely, 2^{12352431421505} is an apocalyptic number.

It is an amenable number.

12352431421505 is a deficient number, since it is larger than the sum of its proper divisors (4589207520319).

12352431421505 is a wasteful number, since it uses less digits than its factorization.

12352431421505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24199256.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 12352431421505 its reverse (50512413425321), we get a palindrome (62864844846826).

The spelling of 12352431421505 in words is "twelve trillion, three hundred fifty-two billion, four hundred thirty-one million, four hundred twenty-one thousand, five hundred five".