20331055342513 has 4 divisors (see below), whose sum is σ = 20392478470768. Its totient is φ = 20269632214260.

The previous prime is 20331055342457. The next prime is 20331055342523. The reversal of 20331055342513 is 31524355013302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20331055342513 is a prime.

It is a super-2 number, since 2×20331055342513² (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 (20331055342523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30711563631 + ... + 30711564292.

It is an arithmetic number, because the mean of its divisors is an integer number (5098119617692).

Almost surely, 2^{20331055342513} is an apocalyptic number.

It is an amenable number.

20331055342513 is a deficient number, since it is larger than the sum of its proper divisors (61423128255).

20331055342513 is an equidigital number, since it uses as much as digits as its factorization.

20331055342513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61423128254.

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 20331055342513 in words is "twenty trillion, three hundred thirty-one billion, fifty-five million, three hundred forty-two thousand, five hundred thirteen".