20352321403613 has 16 divisors (see below), whose sum is σ = 20582845308480. Its totient is φ = 20122230643200.

The previous prime is 20352321403591. The next prime is 20352321403627. The reversal of 20352321403613 is 31630412325302.

It is a cyclic number.

It is not a de Polignac number, because 20352321403613 - 2⁶ = 20352321403549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352321403663) 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, 399125723 + ... + 399176711.

It is an arithmetic number, because the mean of its divisors is an integer number (1286427831780).

Almost surely, 2^{20352321403613} is an apocalyptic number.

It is an amenable number.

20352321403613 is a deficient number, since it is larger than the sum of its proper divisors (230523904867).

20352321403613 is a wasteful number, since it uses less digits than its factorization.

20352321403613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55148.

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 20352321403613 its reverse (31630412325302), we get a palindrome (51982733728915).

The spelling of 20352321403613 in words is "twenty trillion, three hundred fifty-two billion, three hundred twenty-one million, four hundred three thousand, six hundred thirteen".