20004176405 has 8 divisors (see below), whose sum is σ = 24006454872. Its totient is φ = 16002379008.

The previous prime is 20004176389. The next prime is 20004176407. The reversal of 20004176405 is 50467140002.

It can be written as a sum of positive squares in 4 ways, for example, as 890007889 + 19114168516 = 29833^2 + 138254^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20004176405 - 2⁴ = 20004176389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004176407) 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, 21392 + ... + 201161.

It is an arithmetic number, because the mean of its divisors is an integer number (3000806859).

Almost surely, 2^20004176405 is an apocalyptic number.

It is an amenable number.

20004176405 is a deficient number, since it is larger than the sum of its proper divisors (4002278467).

20004176405 is a wasteful number, since it uses less digits than its factorization.

20004176405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240535.

The product of its (nonzero) digits is 6720, while the sum is 29.

The spelling of 20004176405 in words is "twenty billion, four million, one hundred seventy-six thousand, four hundred five".