20430120045 has 8 divisors (see below), whose sum is σ = 32688192096. Its totient is φ = 10896064016.

The previous prime is 20430120041. The next prime is 20430120097. The reversal of 20430120045 is 54002103402.

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 20430120045 - 2² = 20430120041 is a prime.

It is a super-2 number, since 2×20430120045² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430120041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681003987 + ... + 681004016.

It is an arithmetic number, because the mean of its divisors is an integer number (4086024012).

Almost surely, 2^20430120045 is an apocalyptic number.

It is an amenable number.

20430120045 is a deficient number, since it is larger than the sum of its proper divisors (12258072051).

20430120045 is a wasteful number, since it uses less digits than its factorization.

20430120045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362008011.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 20430120045 its reverse (54002103402), we get a palindrome (74432223447).

The spelling of 20430120045 in words is "twenty billion, four hundred thirty million, one hundred twenty thousand, forty-five".