20266040464 has 20 divisors (see below), whose sum is σ = 39268580400. Its totient is φ = 10132213280.

The previous prime is 20266040461. The next prime is 20266040491. The reversal of 20266040464 is 46404066202.

It is not an unprimeable number, because it can be changed into a prime (20266040461) 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 3 ways as a sum of consecutive naturals, for example, 192099 + ... + 278269.

It is an arithmetic number, because the mean of its divisors is an integer number (1963429020).

Almost surely, 2^20266040464 is an apocalyptic number.

It is an amenable number.

20266040464 is a deficient number, since it is larger than the sum of its proper divisors (19002539936).

20266040464 is a wasteful number, since it uses less digits than its factorization.

20266040464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100878 (or 100872 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

The spelling of 20266040464 in words is "twenty billion, two hundred sixty-six million, forty thousand, four hundred sixty-four".