305115340040 has 64 divisors (see below), whose sum is σ = 789848064000. Its totient is φ = 103908872448.

The previous prime is 305115340037. The next prime is 305115340051. The reversal of 305115340040 is 40043511503.

It is a junction number, because it is equal to n+sod(n) for n = 305115339991 and 305115340009.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3614984 + ... + 3698423.

It is an arithmetic number, because the mean of its divisors is an integer number (12341376000).

Almost surely, 2^305115340040 is an apocalyptic number.

It is an amenable number.

305115340040 is an abundant number, since it is smaller than the sum of its proper divisors (484732723960).

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

305115340040 is a wasteful number, since it uses less digits than its factorization.

305115340040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7313574 (or 7313570 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 305115340040 its reverse (40043511503), we get a palindrome (345158851543).

The spelling of 305115340040 in words is "three hundred five billion, one hundred fifteen million, three hundred forty thousand, forty".