330121645 has 64 divisors (see below), whose sum is σ = 497664000. Its totient is φ = 205261056.

The previous prime is 330121619. The next prime is 330121667. The reversal of 330121645 is 546121033.

It is not a de Polignac number, because 330121645 - 2¹¹ = 330119597 is a prime.

It is a super-3 number, since 3×330121645³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1844166 + ... + 1844344.

It is an arithmetic number, because the mean of its divisors is an integer number (7776000).

Almost surely, 2^330121645 is an apocalyptic number.

330121645 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

330121645 is the 9085-th decagonal number.

It is an amenable number.

330121645 is a deficient number, since it is larger than the sum of its proper divisors (167542355).

330121645 is a wasteful number, since it uses less digits than its factorization.

330121645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 330121645 is about 18169.2499845205. The cubic root of 330121645 is about 691.1272235228.

Adding to 330121645 its reverse (546121033), we get a palindrome (876242678).

The spelling of 330121645 in words is "three hundred thirty million, one hundred twenty-one thousand, six hundred forty-five".