20260278366 has 16 divisors (see below), whose sum is σ = 40534435584. Its totient is φ = 6751112984.

The previous prime is 20260278361. The next prime is 20260278407. The reversal of 20260278366 is 66387206202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20260278361) 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, 559260 + ... + 594383.

It is an arithmetic number, because the mean of its divisors is an integer number (2533402224).

Almost surely, 2^20260278366 is an apocalyptic number.

20260278366 is an abundant number, since it is smaller than the sum of its proper divisors (20274157218).

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

20260278366 is a wasteful number, since it uses less digits than its factorization.

20260278366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156575.

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 20260278366 in words is "twenty billion, two hundred sixty million, two hundred seventy-eight thousand, three hundred sixty-six".