20818654282 has 4 divisors (see below), whose sum is σ = 31227981426. Its totient is φ = 10409327140.

The previous prime is 20818654253. The next prime is 20818654313. The reversal of 20818654282 is 28245681802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11353115601 + 9465538681 = 106551^2 + 97291^2 .

It is a super-2 number, since 2×20818654282² (a number of 21 digits) contains 22 as substring.

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, 5204663569 + ... + 5204663572.

Almost surely, 2^20818654282 is an apocalyptic number.

20818654282 is a deficient number, since it is larger than the sum of its proper divisors (10409327144).

20818654282 is a wasteful number, since it uses less digits than its factorization.

20818654282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10409327143.

The product of its (nonzero) digits is 491520, while the sum is 46.

The spelling of 20818654282 in words is "twenty billion, eight hundred eighteen million, six hundred fifty-four thousand, two hundred eighty-two".