321135121246780 has 12 divisors (see below), whose sum is σ = 674383754618280. Its totient is φ = 128454048498704.

The previous prime is 321135121246769. The next prime is 321135121246831. The reversal of 321135121246780 is 87642121531123.

It is a self number, because there is not a number n which added to its sum of digits gives 321135121246780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8028378031150 + ... + 8028378031189.

It is an arithmetic number, because the mean of its divisors is an integer number (56198646218190).

Almost surely, 2^{321135121246780} is an apocalyptic number.

It is an amenable number.

321135121246780 is an abundant number, since it is smaller than the sum of its proper divisors (353248633371500).

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

321135121246780 is a wasteful number, since it uses less digits than its factorization.

321135121246780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16056756062348 (or 16056756062346 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 321135121246780 in words is "three hundred twenty-one trillion, one hundred thirty-five billion, one hundred twenty-one million, two hundred forty-six thousand, seven hundred eighty".