321888338642 has 8 divisors (see below), whose sum is σ = 519973470156. Its totient is φ = 148563848592.

The previous prime is 321888338641. The next prime is 321888338663. The reversal of 321888338642 is 246833888123.

It can be written as a sum of positive squares in 2 ways, for example, as 315260913361 + 6627425281 = 561481^2 + 81409^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×321888338642² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321888338641) 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, 6190160333 + ... + 6190160384.

Almost surely, 2^321888338642 is an apocalyptic number.

321888338642 is a deficient number, since it is larger than the sum of its proper divisors (198085131514).

321888338642 is a wasteful number, since it uses less digits than its factorization.

321888338642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12380320732.

The product of its digits is 10616832, while the sum is 56.

The spelling of 321888338642 in words is "three hundred twenty-one billion, eight hundred eighty-eight million, three hundred thirty-eight thousand, six hundred forty-two".