20400403411 has 8 divisors (see below), whose sum is σ = 20824580304. Its totient is φ = 19979747040.

The previous prime is 20400403367. The next prime is 20400403421. The reversal of 20400403411 is 11430400402.

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 20400403411 - 2¹³ = 20400395219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20400403421) 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, 868420 + ... + 891601.

It is an arithmetic number, because the mean of its divisors is an integer number (2603072538).

Almost surely, 2^20400403411 is an apocalyptic number.

20400403411 is a deficient number, since it is larger than the sum of its proper divisors (424176893).

20400403411 is a wasteful number, since it uses less digits than its factorization.

20400403411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760261.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20400403411 its reverse (11430400402), we get a palindrome (31830803813).

The spelling of 20400403411 in words is "twenty billion, four hundred million, four hundred three thousand, four hundred eleven".