309801853306068 has 96 divisors (see below), whose sum is σ = 756434153502720. Its totient is φ = 98497975551360.

The previous prime is 309801853306037. The next prime is 309801853306069. The reversal of 309801853306068 is 860603358108903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309801853306069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2907764878 + ... + 2907871418.

It is an arithmetic number, because the mean of its divisors is an integer number (7879522432320).

Almost surely, 2^{309801853306068} 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 309801853306068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378217076751360).

309801853306068 is an abundant number, since it is smaller than the sum of its proper divisors (446632300196652).

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

309801853306068 is a wasteful number, since it uses less digits than its factorization.

309801853306068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136277 (or 136275 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 60.

The spelling of 309801853306068 in words is "three hundred nine trillion, eight hundred one billion, eight hundred fifty-three million, three hundred six thousand, sixty-eight".