20356372266 has 16 divisors (see below), whose sum is σ = 42855520800. Its totient is φ = 6428328048.

The previous prime is 20356372261. The next prime is 20356372279. The reversal of 20356372266 is 66227365302.

It is not an unprimeable number, because it can be changed into a prime (20356372261) 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 7 ways as a sum of consecutive naturals, for example, 89282221 + ... + 89282448.

It is an arithmetic number, because the mean of its divisors is an integer number (2678470050).

Almost surely, 2^20356372266 is an apocalyptic number.

20356372266 is an abundant number, since it is smaller than the sum of its proper divisors (22499148534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20356372266 is a wasteful number, since it uses less digits than its factorization.

20356372266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178564693.

The product of its (nonzero) digits is 544320, while the sum is 42.

The spelling of 20356372266 in words is "twenty billion, three hundred fifty-six million, three hundred seventy-two thousand, two hundred sixty-six".