20134266605 has 8 divisors (see below), whose sum is σ = 24190990200. Its totient is φ = 16087499776.

The previous prime is 20134266569. The next prime is 20134266611. The reversal of 20134266605 is 50666243102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 933730249 + 19200536356 = 30557^2 + 138566^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20134266605 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2484740 + ... + 2492829.

It is an arithmetic number, because the mean of its divisors is an integer number (3023873775).

Almost surely, 2^20134266605 is an apocalyptic number.

It is an amenable number.

20134266605 is a deficient number, since it is larger than the sum of its proper divisors (4056723595).

20134266605 is an equidigital number, since it uses as much as digits as its factorization.

20134266605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4978383.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 20134266605 in words is "twenty billion, one hundred thirty-four million, two hundred sixty-six thousand, six hundred five".