20413153120365 has 24 divisors (see below), whose sum is σ = 35514333330840. Its totient is φ = 10846542816384.

The previous prime is 20413153120319. The next prime is 20413153120369. The reversal of 20413153120365 is 56302135131402.

20413153120365 is a `hidden beast` number, since 2 + 0 + 41 + 3 + 1 + 531 + 20 + 3 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 64997462916 + 20348155657449 = 254946^2 + 4510893^2 .

It is not a de Polignac number, because 20413153120365 - 2⁶ = 20413153120301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413153120369) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 843158202 + ... + 843182411.

It is an arithmetic number, because the mean of its divisors is an integer number (1479763888785).

Almost surely, 2^{20413153120365} is an apocalyptic number.

It is an amenable number.

20413153120365 is a deficient number, since it is larger than the sum of its proper divisors (15101180210475).

20413153120365 is a wasteful number, since it uses less digits than its factorization.

20413153120365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686340893 (or 1686340890 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 20413153120365 its reverse (56302135131402), we get a palindrome (76715288251767).

The spelling of 20413153120365 in words is "twenty trillion, four hundred thirteen billion, one hundred fifty-three million, one hundred twenty thousand, three hundred sixty-five".