20320613413 has 4 divisors (see below), whose sum is σ = 21204118368. Its totient is φ = 19437108460.

The previous prime is 20320613407. The next prime is 20320613431. The reversal of 20320613413 is 31431602302.

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 not a de Polignac number, because 20320613413 - 2¹⁷ = 20320482341 is a prime.

It is a super-3 number, since 3×20320613413³ (a number of 32 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 (20320613483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441752443 + ... + 441752488.

It is an arithmetic number, because the mean of its divisors is an integer number (5301029592).

Almost surely, 2^20320613413 is an apocalyptic number.

20320613413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20320613413 is a deficient number, since it is larger than the sum of its proper divisors (883504955).

20320613413 is an equidigital number, since it uses as much as digits as its factorization.

20320613413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883504954.

The product of its (nonzero) digits is 2592, while the sum is 25.

The spelling of 20320613413 in words is "twenty billion, three hundred twenty million, six hundred thirteen thousand, four hundred thirteen".