321533551042 has 16 divisors (see below), whose sum is σ = 526365216000. Its totient is φ = 146090668240.

The previous prime is 321533551039. The next prime is 321533551043. The reversal of 321533551042 is 240155335123.

It is a junction number, because it is equal to n+sod(n) for n = 321533550989 and 321533551007.

It is not an unprimeable number, because it can be changed into a prime (321533551043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2993317 + ... + 3098872.

It is an arithmetic number, because the mean of its divisors is an integer number (32897826000).

Almost surely, 2^321533551042 is an apocalyptic number.

321533551042 is a deficient number, since it is larger than the sum of its proper divisors (204831664958).

321533551042 is a wasteful number, since it uses less digits than its factorization.

321533551042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6094601.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 321533551042 its reverse (240155335123), we get a palindrome (561688886165).

The spelling of 321533551042 in words is "three hundred twenty-one billion, five hundred thirty-three million, five hundred fifty-one thousand, forty-two".