20012254001408 has 72 divisors (see below), whose sum is σ = 40606962222456. Its totient is φ = 9840693657600.

The previous prime is 20012254001401. The next prime is 20012254001413. The reversal of 20012254001408 is 80410045221002.

It can be written as a sum of positive squares in 4 ways, for example, as 5774370552064 + 14237883449344 = 2402992^2 + 3773312^2 .

It is not an unprimeable number, because it can be changed into a prime (20012254001401) 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, 114424748 + ... + 114599508.

It is an arithmetic number, because the mean of its divisors is an integer number (563985586423).

Almost surely, 2^{20012254001408} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012254001408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20303481111228).

20012254001408 is an abundant number, since it is smaller than the sum of its proper divisors (20594708221048).

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

20012254001408 is an equidigital number, since it uses as much as digits as its factorization.

20012254001408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182171 (or 182157 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The spelling of 20012254001408 in words is "twenty trillion, twelve billion, two hundred fifty-four million, one thousand, four hundred eight".