321542120648 has 96 divisors (see below), whose sum is σ = 706725653760. Its totient is φ = 134349062400.

The previous prime is 321542120621. The next prime is 321542120659. The reversal of 321542120648 is 846021245123.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62227361 + ... + 62232527.

It is an arithmetic number, because the mean of its divisors is an integer number (7361725560).

Almost surely, 2^321542120648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321542120648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353362826880).

321542120648 is an abundant number, since it is smaller than the sum of its proper divisors (385183533112).

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

321542120648 is a wasteful number, since it uses less digits than its factorization.

321542120648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5867 (or 5820 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 321542120648 in words is "three hundred twenty-one billion, five hundred forty-two million, one hundred twenty thousand, six hundred forty-eight".