20331331551413 has 8 divisors (see below), whose sum is σ = 20343771379200. Its totient is φ = 20318894920368.

The previous prime is 20331331551371. The next prime is 20331331551451. The reversal of 20331331551413 is 31415513313302.

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 20331331551413 - 2²⁰ = 20331330502837 is a prime.

It is a super-3 number, since 3×20331331551413³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331331553413) 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, 11987228 + ... + 13577786.

It is an arithmetic number, because the mean of its divisors is an integer number (2542971422400).

Almost surely, 2^{20331331551413} is an apocalyptic number.

It is an amenable number.

20331331551413 is a deficient number, since it is larger than the sum of its proper divisors (12439827787).

20331331551413 is a wasteful number, since it uses less digits than its factorization.

20331331551413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598371.

The product of its (nonzero) digits is 48600, while the sum is 35.

Adding to 20331331551413 its reverse (31415513313302), we get a palindrome (51746844864715).

The spelling of 20331331551413 in words is "twenty trillion, three hundred thirty-one billion, three hundred thirty-one million, five hundred fifty-one thousand, four hundred thirteen".