20266506446 has 32 divisors (see below), whose sum is σ = 33894236160. Its totient is φ = 9031982976.

The previous prime is 20266506443. The next prime is 20266506467. The reversal of 20266506446 is 64460566202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20266506443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3296051 + ... + 3302193.

It is an arithmetic number, because the mean of its divisors is an integer number (1059194880).

Almost surely, 2^20266506446 is an apocalyptic number.

20266506446 is a deficient number, since it is larger than the sum of its proper divisors (13627729714).

20266506446 is a wasteful number, since it uses less digits than its factorization.

20266506446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11288.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 20266506446 in words is "twenty billion, two hundred sixty-six million, five hundred six thousand, four hundred forty-six".