305189061040 has 40 divisors (see below), whose sum is σ = 746910074160. Its totient is φ = 115650590976.

The previous prime is 305189061031. The next prime is 305189061049. The reversal of 305189061040 is 40160981503.

It is an interprime number because it is at equal distance from previous prime (305189061031) and next prime (305189061049).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (305189061049) 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, 100389619 + ... + 100392658.

It is an arithmetic number, because the mean of its divisors is an integer number (18672751854).

Almost surely, 2^305189061040 is an apocalyptic number.

It is an amenable number.

305189061040 is an abundant number, since it is smaller than the sum of its proper divisors (441721013120).

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

305189061040 is a wasteful number, since it uses less digits than its factorization.

305189061040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200782309 (or 200782303 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 305189061040 in words is "three hundred five billion, one hundred eighty-nine million, sixty-one thousand, forty".