20235402400000 has 216 divisors, whose sum is σ = 51717930106248. Its totient is φ = 7896729600000.

The previous prime is 20235402399997. The next prime is 20235402400013. The reversal of 20235402400000 is 420453202.

It can be written as a sum of positive squares in 12 ways, for example, as 20137548550144 + 97853849856 = 4487488^2 + 312816^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32491534 + ... + 33108466.

It is an arithmetic number, because the mean of its divisors is an integer number (239434861603).

Almost surely, 2^{20235402400000} is an apocalyptic number.

20235402400000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20235402400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25858965053124).

20235402400000 is an abundant number, since it is smaller than the sum of its proper divisors (31482527706248).

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

20235402400000 is an frugal number, since it uses more digits than its factorization.

20235402400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617015 (or 616981 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

Adding to 20235402400000 its reverse (420453202), we get a palindrome (20235822853202).

The spelling of 20235402400000 in words is "twenty trillion, two hundred thirty-five billion, four hundred two million, four hundred thousand".