12345552124545 has 32 divisors (see below), whose sum is σ = 19829277457920. Its totient is φ = 6558838375680.

The previous prime is 12345552124531. The next prime is 12345552124601. The reversal of 12345552124545 is 54542125554321.

It is not a de Polignac number, because 12345552124545 - 2⁵ = 12345552124513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12345552124494 and 12345552124503.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22973991 + ... + 23505219.

It is an arithmetic number, because the mean of its divisors is an integer number (619664920560).

Almost surely, 2^{12345552124545} is an apocalyptic number.

12345552124545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12345552124545 is a deficient number, since it is larger than the sum of its proper divisors (7483725333375).

12345552124545 is a wasteful number, since it uses less digits than its factorization.

12345552124545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537225.

The product of its digits is 4800000, while the sum is 48.

Adding to 12345552124545 its reverse (54542125554321), we get a palindrome (66887677678866).

The spelling of 12345552124545 in words is "twelve trillion, three hundred forty-five billion, five hundred fifty-two million, one hundred twenty-four thousand, five hundred forty-five".