20959297366 has 32 divisors (see below), whose sum is σ = 37832175360. Its totient is φ = 8507340576.

The previous prime is 20959297357. The next prime is 20959297367. The reversal of 20959297366 is 66379295902.

It is a self number, because there is not a number n which added to its sum of digits gives 20959297366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20959297367) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1130080 + ... + 1148476.

It is an arithmetic number, because the mean of its divisors is an integer number (1182255480).

Almost surely, 2^20959297366 is an apocalyptic number.

20959297366 is a deficient number, since it is larger than the sum of its proper divisors (16872877994).

20959297366 is a wasteful number, since it uses less digits than its factorization.

20959297366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22708.

The product of its (nonzero) digits is 11022480, while the sum is 58.

The spelling of 20959297366 in words is "twenty billion, nine hundred fifty-nine million, two hundred ninety-seven thousand, three hundred sixty-six".