321355345004 has 24 divisors (see below), whose sum is σ = 576618540288. Its totient is φ = 156614405760.

The previous prime is 321355344943. The next prime is 321355345033. The reversal of 321355345004 is 400543553123.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723059 + ... + 1079594.

It is an arithmetic number, because the mean of its divisors is an integer number (24025772512).

Almost surely, 2^321355345004 is an apocalyptic number.

It is an amenable number.

321355345004 is a deficient number, since it is larger than the sum of its proper divisors (255263195284).

321355345004 is a wasteful number, since it uses less digits than its factorization.

321355345004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803785 (or 1803783 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 321355345004 its reverse (400543553123), we get a palindrome (721898898127).

The spelling of 321355345004 in words is "three hundred twenty-one billion, three hundred fifty-five million, three hundred forty-five thousand, four".