321040366636 has 12 divisors (see below), whose sum is σ = 612895245480. Its totient is φ = 145927439360.

The previous prime is 321040366631. The next prime is 321040366637. The reversal of 321040366636 is 636663040123.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (321040366631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3648185941 + ... + 3648186028.

It is an arithmetic number, because the mean of its divisors is an integer number (51074603790).

Almost surely, 2^321040366636 is an apocalyptic number.

It is an amenable number.

321040366636 is a deficient number, since it is larger than the sum of its proper divisors (291854878844).

321040366636 is a wasteful number, since it uses less digits than its factorization.

321040366636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7296371984 (or 7296371982 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 40.

The spelling of 321040366636 in words is "three hundred twenty-one billion, forty million, three hundred sixty-six thousand, six hundred thirty-six".