321055510145 has 8 divisors (see below), whose sum is σ = 385877181120. Its totient is φ = 256437362160.

The previous prime is 321055510123. The next prime is 321055510157. The reversal of 321055510145 is 541015550123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 321055510145 - 2¹² = 321055506049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50877275 + ... + 50883584.

It is an arithmetic number, because the mean of its divisors is an integer number (48234647640).

Almost surely, 2^321055510145 is an apocalyptic number.

It is an amenable number.

321055510145 is a deficient number, since it is larger than the sum of its proper divisors (64821670975).

321055510145 is a wasteful number, since it uses less digits than its factorization.

321055510145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101761495.

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 321055510145 in words is "three hundred twenty-one billion, fifty-five million, five hundred ten thousand, one hundred forty-five".