20354744456430 has 64 divisors (see below), whose sum is σ = 50979128163840. Its totient is φ = 5191551026816.

The previous prime is 20354744456381. The next prime is 20354744456443. The reversal of 20354744456430 is 3465444745302.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 8309461 + ... + 10476479.

It is an arithmetic number, because the mean of its divisors is an integer number (796548877560).

Almost surely, 2^{20354744456430} is an apocalyptic number.

20354744456430 is an abundant number, since it is smaller than the sum of its proper divisors (30624383707410).

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

20354744456430 is a wasteful number, since it uses less digits than its factorization.

20354744456430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180665.

The product of its (nonzero) digits is 19353600, while the sum is 51.

The spelling of 20354744456430 in words is "twenty trillion, three hundred fifty-four billion, seven hundred forty-four million, four hundred fifty-six thousand, four hundred thirty".