30309460640 has 24 divisors (see below), whose sum is σ = 71606101140. Its totient is φ = 12123784192.

The previous prime is 30309460639. The next prime is 30309460673. The reversal of 30309460640 is 4606490303.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30166131856 + 143328784 = 173684^2 + 11972^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30309460640.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94716905 + ... + 94717224.

Almost surely, 2^30309460640 is an apocalyptic number.

It is an amenable number.

30309460640 is an abundant number, since it is smaller than the sum of its proper divisors (41296640500).

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

30309460640 is a wasteful number, since it uses less digits than its factorization.

30309460640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189434144 (or 189434136 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 35.

The spelling of 30309460640 in words is "thirty billion, three hundred nine million, four hundred sixty thousand, six hundred forty".