305044134640 has 160 divisors (see below), whose sum is σ = 827284193280. Its totient is φ = 102447700992.

The previous prime is 305044134617. The next prime is 305044134671. The reversal of 305044134640 is 46431440503.

It is a junction number, because it is equal to n+sod(n) for n = 305044134596 and 305044134605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5591334 + ... + 5645626.

It is an arithmetic number, because the mean of its divisors is an integer number (5170526208).

Almost surely, 2^305044134640 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 305044134640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413642096640).

305044134640 is an abundant number, since it is smaller than the sum of its proper divisors (522240058640).

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

305044134640 is a wasteful number, since it uses less digits than its factorization.

305044134640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54519 (or 54513 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 305044134640 in words is "three hundred five billion, forty-four million, one hundred thirty-four thousand, six hundred forty".