12345555214636 has 48 divisors (see below), whose sum is σ = 25598071779840. Its totient is φ = 5099712958080.

The previous prime is 12345555214549. The next prime is 12345555214637. The reversal of 12345555214636 is 63641255554321.

It is a super-2 number, since 2×12345555214636² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12345555214637) 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 15 ways as a sum of consecutive naturals, for example, 64687656 + ... + 64878223.

It is an arithmetic number, because the mean of its divisors is an integer number (533293162080).

Almost surely, 2^{12345555214636} is an apocalyptic number.

It is an amenable number.

12345555214636 is an abundant number, since it is smaller than the sum of its proper divisors (13252516565204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12345555214636 is a wasteful number, since it uses less digits than its factorization.

12345555214636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129566014 (or 129566012 counting only the distinct ones).

The product of its digits is 12960000, while the sum is 52.

The spelling of 12345555214636 in words is "twelve trillion, three hundred forty-five billion, five hundred fifty-five million, two hundred fourteen thousand, six hundred thirty-six".