321157618060 has 12 divisors (see below), whose sum is σ = 674430997968. Its totient is φ = 128463047216.

The previous prime is 321157618057. The next prime is 321157618069. The reversal of 321157618060 is 60816751123.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (321157618069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8028940432 + ... + 8028940471.

It is an arithmetic number, because the mean of its divisors is an integer number (56202583164).

Almost surely, 2^321157618060 is an apocalyptic number.

It is an amenable number.

321157618060 is an abundant number, since it is smaller than the sum of its proper divisors (353273379908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321157618060 is a wasteful number, since it uses less digits than its factorization.

321157618060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16057880912 (or 16057880910 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 321157618060 in words is "three hundred twenty-one billion, one hundred fifty-seven million, six hundred eighteen thousand, sixty".