20404102002 has 16 divisors (see below), whose sum is σ = 40832762880. Its totient is φ = 6797274192.

The previous prime is 20404101929. The next prime is 20404102007. The reversal of 20404102002 is 20020140402.

It is not an unprimeable number, because it can be changed into a prime (20404102007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012477 + ... + 1032432.

It is an arithmetic number, because the mean of its divisors is an integer number (2552047680).

Almost surely, 2^20404102002 is an apocalyptic number.

20404102002 is an abundant number, since it is smaller than the sum of its proper divisors (20428660878).

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

20404102002 is a wasteful number, since it uses less digits than its factorization.

20404102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046577.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20404102002 its reverse (20020140402), we get a palindrome (40424242404).

The spelling of 20404102002 in words is "twenty billion, four hundred four million, one hundred two thousand, two".