20413530350365 has 8 divisors (see below), whose sum is σ = 24497982618840. Its totient is φ = 16329660148032.

The previous prime is 20413530350329. The next prime is 20413530350377. The reversal of 20413530350365 is 56305303531402.

It can be written as a sum of positive squares in 4 ways, for example, as 1961170574724 + 18452359775641 = 1400418^2 + 4295621^2 .

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 20413530350365 - 2⁹ = 20413530349853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145439374 + ... + 145579663.

It is an arithmetic number, because the mean of its divisors is an integer number (3062247827355).

Almost surely, 2^{20413530350365} is an apocalyptic number.

It is an amenable number.

20413530350365 is a deficient number, since it is larger than the sum of its proper divisors (4084452268475).

20413530350365 is a wasteful number, since it uses less digits than its factorization.

20413530350365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291033071.

The product of its (nonzero) digits is 486000, while the sum is 40.

Adding to 20413530350365 its reverse (56305303531402), we get a palindrome (76718833881767).

The spelling of 20413530350365 in words is "twenty trillion, four hundred thirteen billion, five hundred thirty million, three hundred fifty thousand, three hundred sixty-five".