30405378684 has 12 divisors (see below), whose sum is σ = 70945883624. Its totient is φ = 10135126224.

The previous prime is 30405378623. The next prime is 30405378769. The reversal of 30405378684 is 48687350403.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 1266890767 + ... + 1266890790.

Almost surely, 2^30405378684 is an apocalyptic number.

It is an amenable number.

30405378684 is an abundant number, since it is smaller than the sum of its proper divisors (40540504940).

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

30405378684 is a wasteful number, since it uses less digits than its factorization.

30405378684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533781564 (or 2533781562 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 30405378684 in words is "thirty billion, four hundred five million, three hundred seventy-eight thousand, six hundred eighty-four".