20204312402 has 16 divisors (see below), whose sum is σ = 30374678400. Its totient is φ = 10079443440.

The previous prime is 20204312363. The next prime is 20204312413. The reversal of 20204312402 is 20421340202.

It is a super-2 number, since 2×20204312402² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2082599 + ... + 2092277.

It is an arithmetic number, because the mean of its divisors is an integer number (1898417400).

Almost surely, 2^20204312402 is an apocalyptic number.

20204312402 is a deficient number, since it is larger than the sum of its proper divisors (10170365998).

20204312402 is a wasteful number, since it uses less digits than its factorization.

20204312402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11921.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20204312402 its reverse (20421340202), we get a palindrome (40625652604).

The spelling of 20204312402 in words is "twenty billion, two hundred four million, three hundred twelve thousand, four hundred two".