20004543694481 has 8 divisors (see below), whose sum is σ = 20155294139040. Its totient is φ = 19853861828128.

The previous prime is 20004543694391. The next prime is 20004543694493. The reversal of 20004543694481 is 18449634540002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20004543694481 - 2²² = 20004539500177 is a prime.

It is a super-2 number, since 2×20004543694481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20004543694381) 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, 16558871 + ... + 17725836.

It is an arithmetic number, because the mean of its divisors is an integer number (2519411767380).

Almost surely, 2^{20004543694481} is an apocalyptic number.

It is an amenable number.

20004543694481 is a deficient number, since it is larger than the sum of its proper divisors (150750444559).

20004543694481 is a wasteful number, since it uses less digits than its factorization.

20004543694481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34289103.

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 20004543694481 in words is "twenty trillion, four billion, five hundred forty-three million, six hundred ninety-four thousand, four hundred eighty-one".