20537906366 has 8 divisors (see below), whose sum is σ = 30808688904. Its totient is φ = 10268343400.

The previous prime is 20537906309. The next prime is 20537906369. The reversal of 20537906366 is 66360973502.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20537906366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20537906369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261560 + ... + 330891.

It is an arithmetic number, because the mean of its divisors is an integer number (3851086113).

Almost surely, 2^20537906366 is an apocalyptic number.

20537906366 is a deficient number, since it is larger than the sum of its proper divisors (10270782538).

20537906366 is a wasteful number, since it uses less digits than its factorization.

20537906366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609786.

The product of its (nonzero) digits is 1224720, while the sum is 47.

The spelling of 20537906366 in words is "twenty billion, five hundred thirty-seven million, nine hundred six thousand, three hundred sixty-six".