321427501613 has 16 divisors (see below), whose sum is σ = 340069632000. Its totient is φ = 302959537200.

The previous prime is 321427501607. The next prime is 321427501621. The reversal of 321427501613 is 316105724123.

It is not a de Polignac number, because 321427501613 - 2²⁰ = 321426453037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321427503613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7176338 + ... + 7220988.

It is an arithmetic number, because the mean of its divisors is an integer number (21254352000).

Almost surely, 2^321427501613 is an apocalyptic number.

It is an amenable number.

321427501613 is a deficient number, since it is larger than the sum of its proper divisors (18642130387).

321427501613 is a wasteful number, since it uses less digits than its factorization.

321427501613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46592.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 321427501613 in words is "three hundred twenty-one billion, four hundred twenty-seven million, five hundred one thousand, six hundred thirteen".