321674507263387 has 16 divisors (see below), whose sum is σ = 322470964108800. Its totient is φ = 320879222526240.

The previous prime is 321674507263349. The next prime is 321674507263409. The reversal of 321674507263387 is 783362705476123.

It is a cyclic number.

It is not a de Polignac number, because 321674507263387 - 2⁷ = 321674507263259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321674507263987) 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, 2493323712 + ... + 2493452722.

It is an arithmetic number, because the mean of its divisors is an integer number (20154435256800).

Almost surely, 2^{321674507263387} is an apocalyptic number.

321674507263387 is a deficient number, since it is larger than the sum of its proper divisors (796456845413).

321674507263387 is a wasteful number, since it uses less digits than its factorization.

321674507263387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133506.

The product of its (nonzero) digits is 213373440, while the sum is 64.

The spelling of 321674507263387 in words is "three hundred twenty-one trillion, six hundred seventy-four billion, five hundred seven million, two hundred sixty-three thousand, three hundred eighty-seven".