20453004554320 has 80 divisors (see below), whose sum is σ = 54223598998800. Its totient is φ = 7107650445312.

The previous prime is 20453004554299. The next prime is 20453004554321. The reversal of 20453004554320 is 2345540035402.

It can be written as a sum of positive squares in 8 ways, for example, as 2676797032464 + 17776207521856 = 1636092^2 + 4216184^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-4 number, since 4×20453004554320⁴ (a number of 54 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20453004554320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20453004554321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 578404395 + ... + 578439754.

It is an arithmetic number, because the mean of its divisors is an integer number (677794987485).

Almost surely, 2^{20453004554320} is an apocalyptic number.

20453004554320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20453004554320 is an abundant number, since it is smaller than the sum of its proper divisors (33770594444480).

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

20453004554320 is a wasteful number, since it uses less digits than its factorization.

20453004554320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156844192 (or 1156844186 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 37.

Adding to 20453004554320 its reverse (2345540035402), we get a palindrome (22798544589722).

The spelling of 20453004554320 in words is "twenty trillion, four hundred fifty-three billion, four million, five hundred fifty-four thousand, three hundred twenty".