20230641501605 has 8 divisors (see below), whose sum is σ = 24364411571832. Its totient is φ = 16126085354688.

The previous prime is 20230641501601. The next prime is 20230641501611. The reversal of 20230641501605 is 50610514603202.

It can be written as a sum of positive squares in 4 ways, for example, as 198016990081 + 20032624511524 = 444991^2 + 4475782^2 .

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 20230641501605 - 2² = 20230641501601 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 (20230641501601) 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 7 ways as a sum of consecutive naturals, for example, 7303479302 + ... + 7303482071.

It is an arithmetic number, because the mean of its divisors is an integer number (3045551446479).

Almost surely, 2^{20230641501605} is an apocalyptic number.

It is an amenable number.

20230641501605 is a deficient number, since it is larger than the sum of its proper divisors (4133770070227).

20230641501605 is a wasteful number, since it uses less digits than its factorization.

20230641501605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14606961655.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 20230641501605 in words is "twenty trillion, two hundred thirty billion, six hundred forty-one million, five hundred one thousand, six hundred five".