20411431100420 has 24 divisors (see below), whose sum is σ = 42882666271704. Its totient is φ = 8161017971456.

The previous prime is 20411431100419. The next prime is 20411431100513. The reversal of 20411431100420 is 2400113411402.

It can be written as a sum of positive squares in 4 ways, for example, as 1408527470596 + 19002903629824 = 1186814^2 + 4359232^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222107207 + ... + 222199086.

It is an arithmetic number, because the mean of its divisors is an integer number (1786777761321).

Almost surely, 2^{20411431100420} is an apocalyptic number.

20411431100420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20411431100420 is an abundant number, since it is smaller than the sum of its proper divisors (22471235171284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20411431100420 is a wasteful number, since it uses less digits than its factorization.

20411431100420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444308599 (or 444308597 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 20411431100420 its reverse (2400113411402), we get a palindrome (22811544511822).

The spelling of 20411431100420 in words is "twenty trillion, four hundred eleven billion, four hundred thirty-one million, one hundred thousand, four hundred twenty".