20669400082 has 8 divisors (see below), whose sum is σ = 31004756352. Its totient is φ = 10334481300.

The previous prime is 20669400077. The next prime is 20669400107. The reversal of 20669400082 is 28000496602.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63207 + ... + 212917.

It is an arithmetic number, because the mean of its divisors is an integer number (3875594544).

Almost surely, 2^20669400082 is an apocalyptic number.

20669400082 is a deficient number, since it is larger than the sum of its proper divisors (10335356270).

20669400082 is a wasteful number, since it uses less digits than its factorization.

20669400082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218744.

The product of its (nonzero) digits is 41472, while the sum is 37.

Adding to 20669400082 its reverse (28000496602), we get a palindrome (48669896684).

The spelling of 20669400082 in words is "twenty billion, six hundred sixty-nine million, four hundred thousand, eighty-two".