20136605453066 has 4 divisors (see below), whose sum is σ = 30204908179602. Its totient is φ = 10068302726532.

The previous prime is 20136605453039. The next prime is 20136605453087. The reversal of 20136605453066 is 66035450663102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18173723194225 + 1962882258841 = 4263065^2 + 1401029^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20136605453066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5034151363265 + ... + 5034151363268.

Almost surely, 2^{20136605453066} is an apocalyptic number.

20136605453066 is a deficient number, since it is larger than the sum of its proper divisors (10068302726536).

20136605453066 is a wasteful number, since it uses less digits than its factorization.

20136605453066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10068302726535.

The product of its (nonzero) digits is 2332800, while the sum is 47.

The spelling of 20136605453066 in words is "twenty trillion, one hundred thirty-six billion, six hundred five million, four hundred fifty-three thousand, sixty-six".