20411400421 has 8 divisors (see below), whose sum is σ = 21872458944. Its totient is φ = 18979273920.

The previous prime is 20411400419. The next prime is 20411400431. The reversal of 20411400421 is 12400411402.

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 20411400421 - 2¹ = 20411400419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20411400431) 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, 7231545 + ... + 7234366.

It is an arithmetic number, because the mean of its divisors is an integer number (2734057368).

Almost surely, 2^20411400421 is an apocalyptic number.

It is an amenable number.

20411400421 is a deficient number, since it is larger than the sum of its proper divisors (1461058523).

20411400421 is a wasteful number, since it uses less digits than its factorization.

20411400421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14466011.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20411400421 its reverse (12400411402), we get a palindrome (32811811823).

The spelling of 20411400421 in words is "twenty billion, four hundred eleven million, four hundred thousand, four hundred twenty-one".