20612604012345 has 24 divisors (see below), whose sum is σ = 37051791905856. Its totient is φ = 10993388805936.

The previous prime is 20612604012317. The next prime is 20612604012397. The reversal of 20612604012345 is 54321040621602.

20612604012345 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 2 + 604 + 0 + 1 + 2 + 3 + 45 = 666.

It is not a de Polignac number, because 20612604012345 - 2⁵ = 20612604012313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8482551877 + ... + 8482554306.

It is an arithmetic number, because the mean of its divisors is an integer number (1543824662744).

Almost surely, 2^{20612604012345} is an apocalyptic number.

It is an amenable number.

20612604012345 is a deficient number, since it is larger than the sum of its proper divisors (16439187893511).

20612604012345 is an equidigital number, since it uses as much as digits as its factorization.

20612604012345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16965106203 (or 16965106191 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 20612604012345 its reverse (54321040621602), we get a palindrome (74933644633947).

The spelling of 20612604012345 in words is "twenty trillion, six hundred twelve billion, six hundred four million, twelve thousand, three hundred forty-five".