305075345140 has 24 divisors (see below), whose sum is σ = 640729465992. Its totient is φ = 122016568320.

The previous prime is 305075345119. The next prime is 305075345149. The reversal of 305075345140 is 41543570503.

It can be written as a sum of positive squares in 4 ways, for example, as 80668496484 + 224406848656 = 284022^2 + 473716^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 305075345140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305075345149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662769 + ... + 1024408.

It is an arithmetic number, because the mean of its divisors is an integer number (26697061083).

Almost surely, 2^305075345140 is an apocalyptic number.

It is an amenable number.

305075345140 is an abundant number, since it is smaller than the sum of its proper divisors (335654120852).

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

305075345140 is a wasteful number, since it uses less digits than its factorization.

305075345140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696227 (or 1696225 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 37.

The spelling of 305075345140 in words is "three hundred five billion, seventy-five million, three hundred forty-five thousand, one hundred forty".