20413334566461 has 8 divisors (see below), whose sum is σ = 27233485014240. Its totient is φ = 13601036914832.

The previous prime is 20413334566451. The next prime is 20413334566481. The reversal of 20413334566461 is 16466543331402.

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 20413334566461 - 2⁶ = 20413334566397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20413334566461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413334566451) 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, 1963192971 + ... + 1963203368.

It is an arithmetic number, because the mean of its divisors is an integer number (3404185626780).

Almost surely, 2^{20413334566461} is an apocalyptic number.

It is an amenable number.

20413334566461 is a deficient number, since it is larger than the sum of its proper divisors (6820150447779).

20413334566461 is a wasteful number, since it uses less digits than its factorization.

20413334566461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926398075.

The product of its (nonzero) digits is 3732480, while the sum is 48.

Adding to 20413334566461 its reverse (16466543331402), we get a palindrome (36879877897863).

The spelling of 20413334566461 in words is "twenty trillion, four hundred thirteen billion, three hundred thirty-four million, five hundred sixty-six thousand, four hundred sixty-one".