20081450145 has 8 divisors (see below), whose sum is σ = 32130320256. Its totient is φ = 10710106736.

The previous prime is 20081450131. The next prime is 20081450149. The reversal of 20081450145 is 54105418002.

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 20081450145 - 2⁸ = 20081449889 is a prime.

It is a super-2 number, since 2×20081450145² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20081450149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669381657 + ... + 669381686.

It is an arithmetic number, because the mean of its divisors is an integer number (4016290032).

Almost surely, 2^20081450145 is an apocalyptic number.

It is an amenable number.

20081450145 is a deficient number, since it is larger than the sum of its proper divisors (12048870111).

20081450145 is a wasteful number, since it uses less digits than its factorization.

20081450145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338763351.

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 20081450145 its reverse (54105418002), we get a palindrome (74186868147).

The spelling of 20081450145 in words is "twenty billion, eighty-one million, four hundred fifty thousand, one hundred forty-five".