305042053512 has 128 divisors (see below), whose sum is σ = 887673830400. Its totient is φ = 85555761408.

The previous prime is 305042053489. The next prime is 305042053577. The reversal of 305042053512 is 215350240503.

It is a super-3 number, since 3×305042053512³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 305042053512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2119539 + ... + 2258877.

It is an arithmetic number, because the mean of its divisors is an integer number (6934951800).

Almost surely, 2^305042053512 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 305042053512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443836915200).

305042053512 is an abundant number, since it is smaller than the sum of its proper divisors (582631776888).

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

305042053512 is a wasteful number, since it uses less digits than its factorization.

305042053512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139595 (or 139591 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 305042053512 in words is "three hundred five billion, forty-two million, fifty-three thousand, five hundred twelve".