20036266605 has 24 divisors (see below), whose sum is σ = 35927101080. Its totient is φ = 10317525120.

The previous prime is 20036266597. The next prime is 20036266687. The reversal of 20036266605 is 50666263002.

It can be written as a sum of positive squares in 4 ways, for example, as 4545726084 + 15490540521 = 67422^2 + 124461^2 .

It is not a de Polignac number, because 20036266605 - 2³ = 20036266597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20036266605.

It is a congruent number.

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, 7675426 + ... + 7678035.

It is an arithmetic number, because the mean of its divisors is an integer number (1496962545).

Almost surely, 2^20036266605 is an apocalyptic number.

It is an amenable number.

20036266605 is a deficient number, since it is larger than the sum of its proper divisors (15890834475).

20036266605 is a wasteful number, since it uses less digits than its factorization.

20036266605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15353501 (or 15353498 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 20036266605 in words is "twenty billion, thirty-six million, two hundred sixty-six thousand, six hundred five".