321451210993 has 16 divisors (see below), whose sum is σ = 374468405760. Its totient is φ = 273049862400.

The previous prime is 321451210987. The next prime is 321451211027. The reversal of 321451210993 is 399012154123.

It is a cyclic number.

It is not a de Polignac number, because 321451210993 - 2¹³ = 321451202801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321451210933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16243080 + ... + 16262857.

It is an arithmetic number, because the mean of its divisors is an integer number (23404275360).

Almost surely, 2^321451210993 is an apocalyptic number.

It is an amenable number.

321451210993 is a deficient number, since it is larger than the sum of its proper divisors (53017194767).

321451210993 is a wasteful number, since it uses less digits than its factorization.

321451210993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32506008.

The product of its (nonzero) digits is 58320, while the sum is 40.

The spelling of 321451210993 in words is "three hundred twenty-one billion, four hundred fifty-one million, two hundred ten thousand, nine hundred ninety-three".