20802046264 has 8 divisors (see below), whose sum is σ = 39003836760. Its totient is φ = 10401023128.

The previous prime is 20802046259. The next prime is 20802046297. The reversal of 20802046264 is 46264020802.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1300127884 + ... + 1300127899.

It is an arithmetic number, because the mean of its divisors is an integer number (4875479595).

Almost surely, 2^20802046264 is an apocalyptic number.

It is an amenable number.

20802046264 is a deficient number, since it is larger than the sum of its proper divisors (18201790496).

20802046264 is a wasteful number, since it uses less digits than its factorization.

20802046264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600255789 (or 2600255785 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The spelling of 20802046264 in words is "twenty billion, eight hundred two million, forty-six thousand, two hundred sixty-four".