12352646661555 has 32 divisors (see below), whose sum is σ = 20141772185664. Its totient is φ = 6462289506816.

The previous prime is 12352646661533. The next prime is 12352646661559. The reversal of 12352646661555 is 55516664625321.

It is not a de Polignac number, because 12352646661555 - 2¹⁵ = 12352646628787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12352646661495 and 12352646661504.

It is not an unprimeable number, because it can be changed into a prime (12352646661559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1680717 + ... + 5246913.

It is an arithmetic number, because the mean of its divisors is an integer number (629430380802).

Almost surely, 2^{12352646661555} is an apocalyptic number.

12352646661555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12352646661555 is a deficient number, since it is larger than the sum of its proper divisors (7789125524109).

12352646661555 is a wasteful number, since it uses less digits than its factorization.

12352646661555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570615.

The product of its digits is 38880000, while the sum is 57.

The spelling of 12352646661555 in words is "twelve trillion, three hundred fifty-two billion, six hundred forty-six million, six hundred sixty-one thousand, five hundred fifty-five".