321140553215 has 8 divisors (see below), whose sum is σ = 385393349088. Its totient is φ = 256895985760.

The previous prime is 321140553187. The next prime is 321140553233. The reversal of 321140553215 is 512355041123.

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

It is not a de Polignac number, because 321140553215 - 2¹⁸ = 321140291071 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1970912 + ... + 2127621.

It is an arithmetic number, because the mean of its divisors is an integer number (48174168636).

Almost surely, 2^321140553215 is an apocalyptic number.

321140553215 is a deficient number, since it is larger than the sum of its proper divisors (64252795873).

321140553215 is a wasteful number, since it uses less digits than its factorization.

321140553215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114209.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 321140553215 its reverse (512355041123), we get a palindrome (833495594338).

The spelling of 321140553215 in words is "three hundred twenty-one billion, one hundred forty million, five hundred fifty-three thousand, two hundred fifteen".