20413220454351 has 16 divisors (see below), whose sum is σ = 30400142161920. Its totient is φ = 13537563299640.

The previous prime is 20413220454343. The next prime is 20413220454391. The reversal of 20413220454351 is 15345402231402.

It is a happy number.

20413220454351 is a `hidden beast` number, since 2 + 0 + 4 + 13 + 2 + 204 + 5 + 435 + 1 = 666.

It is not a de Polignac number, because 20413220454351 - 2³ = 20413220454343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413220454391) 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, 1979170765 + ... + 1979181078.

It is an arithmetic number, because the mean of its divisors is an integer number (1900008885120).

Almost surely, 2^{20413220454351} is an apocalyptic number.

20413220454351 is a deficient number, since it is larger than the sum of its proper divisors (9986921707569).

20413220454351 is a wasteful number, since it uses less digits than its factorization.

20413220454351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958352043 (or 3958352037 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 20413220454351 its reverse (15345402231402), we get a palindrome (35758622685753).

The spelling of 20413220454351 in words is "twenty trillion, four hundred thirteen billion, two hundred twenty million, four hundred fifty-four thousand, three hundred fifty-one".