20605006002 has 32 divisors (see below), whose sum is σ = 48245871744. Its totient is φ = 5743555200.

The previous prime is 20605005997. The next prime is 20605006031. The reversal of 20605006002 is 20060050602.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 20605006002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5981149 + ... + 5984592.

It is an arithmetic number, because the mean of its divisors is an integer number (1507683492).

Almost surely, 2^20605006002 is an apocalyptic number.

20605006002 is an abundant number, since it is smaller than the sum of its proper divisors (27640865742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20605006002 is a wasteful number, since it uses less digits than its factorization.

20605006002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11965794.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20605006002 its reverse (20060050602), we get a palindrome (40665056604).

The spelling of 20605006002 in words is "twenty billion, six hundred five million, six thousand, two".