20413216453554 has 24 divisors (see below), whose sum is σ = 44244247703292. Its totient is φ = 6802003630080.

The previous prime is 20413216453501. The next prime is 20413216453559. The reversal of 20413216453554 is 45535461231402.

20413216453554 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 3 + 2 + 1 + 64 + 535 + 54 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18111705966225 + 2301510487329 = 4255785^2 + 1517073^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20413216453559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200102127 + ... + 200204114.

Almost surely, 2^{20413216453554} is an apocalyptic number.

20413216453554 is an abundant number, since it is smaller than the sum of its proper divisors (23831031249738).

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

20413216453554 is a wasteful number, since it uses less digits than its factorization.

20413216453554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400309082 (or 400309079 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

Adding to 20413216453554 its reverse (45535461231402), we get a palindrome (65948677684956).

The spelling of 20413216453554 in words is "twenty trillion, four hundred thirteen billion, two hundred sixteen million, four hundred fifty-three thousand, five hundred fifty-four".