20404133402 has 16 divisors (see below), whose sum is σ = 32227511040. Its totient is φ = 9661978368.

The previous prime is 20404133401. The next prime is 20404133411. The reversal of 20404133402 is 20433140402.

It is a super-2 number, since 2×20404133402² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20404133401) 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, 33623 + ... + 204789.

It is an arithmetic number, because the mean of its divisors is an integer number (2014219440).

Almost surely, 2^20404133402 is an apocalyptic number.

20404133402 is a deficient number, since it is larger than the sum of its proper divisors (11823377638).

20404133402 is a wasteful number, since it uses less digits than its factorization.

20404133402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174325.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20404133402 its reverse (20433140402), we get a palindrome (40837273804).

The spelling of 20404133402 in words is "twenty billion, four hundred four million, one hundred thirty-three thousand, four hundred two".