306115545005220 has 144 divisors (see below), whose sum is σ = 868487805948672. Its totient is φ = 80561122037760.

The previous prime is 306115545005147. The next prime is 306115545005251. The reversal of 306115545005220 is 22500545511603.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 177653205 + ... + 179368035.

It is an arithmetic number, because the mean of its divisors is an integer number (6031165319088).

Almost surely, 2^{306115545005220} is an apocalyptic number.

306115545005220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306115545005220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434243902974336).

306115545005220 is an abundant number, since it is smaller than the sum of its proper divisors (562372260943452).

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

306115545005220 is a wasteful number, since it uses less digits than its factorization.

306115545005220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715302 (or 1715187 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 306115545005220 in words is "three hundred six trillion, one hundred fifteen billion, five hundred forty-five million, five thousand, two hundred twenty".