20004356356424 has 48 divisors (see below), whose sum is σ = 41230131497100. Its totient is φ = 9092416171520.

The previous prime is 20004356356417. The next prime is 20004356356477. The reversal of 20004356356424 is 42465365340002.

It can be written as a sum of positive squares in 2 ways, for example, as 19752069148900 + 252287207524 = 4444330^2 + 502282^2 .

It is a super-3 number, since 3×20004356356424³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

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 11 ways as a sum of consecutive naturals, for example, 18422732 + ... + 19478340.

Almost surely, 2^{20004356356424} is an apocalyptic number.

It is an amenable number.

20004356356424 is an abundant number, since it is smaller than the sum of its proper divisors (21225775140676).

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

20004356356424 is a wasteful number, since it uses less digits than its factorization.

20004356356424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075214 (or 1075199 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 44.

The spelling of 20004356356424 in words is "twenty trillion, four billion, three hundred fifty-six million, three hundred fifty-six thousand, four hundred twenty-four".