321607698912 has 144 divisors (see below), whose sum is σ = 996446772720. Its totient is φ = 100896454656.

The previous prime is 321607698911. The next prime is 321607698947. The reversal of 321607698912 is 219896706123.

321607698912 is a `hidden beast` number, since 3 + 21 + 607 + 6 + 9 + 8 + 9 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321607698911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 394303 + ... + 893694.

It is an arithmetic number, because the mean of its divisors is an integer number (6919769255).

Almost surely, 2^321607698912 is an apocalyptic number.

321607698912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

321607698912 is an abundant number, since it is smaller than the sum of its proper divisors (674839073808).

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

321607698912 is a wasteful number, since it uses less digits than its factorization.

321607698912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288050 (or 1288019 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 321607698912 in words is "three hundred twenty-one billion, six hundred seven million, six hundred ninety-eight thousand, nine hundred twelve".