20154201304512 has 448 divisors, whose sum is σ = 60880984915968. Its totient is φ = 5828680704000.

The previous prime is 20154201304441. The next prime is 20154201304561. The reversal of 20154201304512 is 21540310245102.

It is a self number, because there is not a number n which added to its sum of digits gives 20154201304512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3352883587 + ... + 3352889597.

It is an arithmetic number, because the mean of its divisors is an integer number (135895055616).

Almost surely, 2^{20154201304512} is an apocalyptic number.

20154201304512 is a gapful number since it is divisible by the number (22) 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 20154201304512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30440492457984).

20154201304512 is an abundant number, since it is smaller than the sum of its proper divisors (40726783611456).

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

20154201304512 is a wasteful number, since it uses less digits than its factorization.

20154201304512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6768 (or 6758 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 20154201304512 its reverse (21540310245102), we get a palindrome (41694511549614).

The spelling of 20154201304512 in words is "twenty trillion, one hundred fifty-four billion, two hundred one million, three hundred four thousand, five hundred twelve".