321421255544717 has 16 divisors (see below), whose sum is σ = 340903021917312. Its totient is φ = 302003548346880.

The previous prime is 321421255544707. The next prime is 321421255544723. The reversal of 321421255544717 is 717445552124123.

It is not a de Polignac number, because 321421255544717 - 2²² = 321421251350413 is a prime.

It is a super-2 number, since 2×321421255544717² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321421255544707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45491048 + ... + 52079534.

It is an arithmetic number, because the mean of its divisors is an integer number (21306438869832).

Almost surely, 2^{321421255544717} is an apocalyptic number.

It is an amenable number.

321421255544717 is a deficient number, since it is larger than the sum of its proper divisors (19481766372595).

321421255544717 is a wasteful number, since it uses less digits than its factorization.

321421255544717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6593348.

The product of its digits is 9408000, while the sum is 53.

The spelling of 321421255544717 in words is "three hundred twenty-one trillion, four hundred twenty-one billion, two hundred fifty-five million, five hundred forty-four thousand, seven hundred seventeen".