305005011020 has 24 divisors (see below), whose sum is σ = 645553918464. Its totient is φ = 121041357696.

The previous prime is 305005011001. The next prime is 305005011041. The reversal of 305005011020 is 20110500503.

It is a self number, because there is not a number n which added to its sum of digits gives 305005011020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60037817 + ... + 60042896.

It is an arithmetic number, because the mean of its divisors is an integer number (26898079936).

Almost surely, 2^305005011020 is an apocalyptic number.

It is an amenable number.

305005011020 is an abundant number, since it is smaller than the sum of its proper divisors (340548907444).

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

305005011020 is a wasteful number, since it uses less digits than its factorization.

305005011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120080849 (or 120080847 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

Adding to 305005011020 its reverse (20110500503), we get a palindrome (325115511523).

The spelling of 305005011020 in words is "three hundred five billion, five million, eleven thousand, twenty".