20802406266002 has 8 divisors (see below), whose sum is σ = 31792356746316. Its totient is φ = 10204954017232.

The previous prime is 20802406265983. The next prime is 20802406266017. The reversal of 20802406266002 is 20066260420802.

It can be written as a sum of positive squares in 2 ways, for example, as 20599970160961 + 202436105041 = 4538719^2 + 449929^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 98124557753 + ... + 98124557964.

Almost surely, 2^{20802406266002} is an apocalyptic number.

20802406266002 is a deficient number, since it is larger than the sum of its proper divisors (10989950480314).

20802406266002 is a wasteful number, since it uses less digits than its factorization.

20802406266002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196249115772.

The product of its (nonzero) digits is 110592, while the sum is 38.

Adding to 20802406266002 its reverse (20066260420802), we get a palindrome (40868666686804).

The spelling of 20802406266002 in words is "twenty trillion, eight hundred two billion, four hundred six million, two hundred sixty-six thousand, two".