321511405110664 has 16 divisors (see below), whose sum is σ = 602842591180800. Its totient is φ = 160753380795792.

The previous prime is 321511405110653. The next prime is 321511405110667. The reversal of 321511405110664 is 466011504115123.

It is not an unprimeable number, because it can be changed into a prime (321511405110667) 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, 289631344 + ... + 290739295.

It is an arithmetic number, because the mean of its divisors is an integer number (37677661948800).

Almost surely, 2^{321511405110664} is an apocalyptic number.

It is an amenable number.

321511405110664 is a deficient number, since it is larger than the sum of its proper divisors (281331186070136).

321511405110664 is a wasteful number, since it uses less digits than its factorization.

321511405110664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580439892 (or 580439888 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

Adding to 321511405110664 its reverse (466011504115123), we get a palindrome (787522909225787).

The spelling of 321511405110664 in words is "three hundred twenty-one trillion, five hundred eleven billion, four hundred five million, one hundred ten thousand, six hundred sixty-four".