20111423204000 has 96 divisors (see below), whose sum is σ = 50090668454736. Its totient is φ = 7934369587200.

The previous prime is 20111423203997. The next prime is 20111423204003. The reversal of 20111423204000 is 40232411102.

It is an interprime number because it is at equal distance from previous prime (20111423203997) and next prime (20111423204003).

It can be written as a sum of positive squares in 8 ways, for example, as 2342601669136 + 17768821534864 = 1530556^2 + 4215308^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (20111423204003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34145369 + ... + 34729368.

Almost surely, 2^{20111423204000} is an apocalyptic number.

20111423204000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111423204000 is an abundant number, since it is smaller than the sum of its proper divisors (29979245250736).

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

20111423204000 is an equidigital number, since it uses as much as digits as its factorization.

20111423204000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68874835 (or 68874817 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20111423204000 its reverse (40232411102), we get a palindrome (20151655615102).

The spelling of 20111423204000 in words is "twenty trillion, one hundred eleven billion, four hundred twenty-three million, two hundred four thousand".