30786863744 has 128 divisors (see below), whose sum is σ = 76444838400. Its totient is φ = 12024889344.

The previous prime is 30786863687. The next prime is 30786863771. The reversal of 30786863744 is 44736868703.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 30786863744.

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, 903464 + ... + 936920.

It is an arithmetic number, because the mean of its divisors is an integer number (597225300).

Almost surely, 2^30786863744 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 30786863744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38222419200).

30786863744 is an abundant number, since it is smaller than the sum of its proper divisors (45657974656).

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

30786863744 is a wasteful number, since it uses less digits than its factorization.

30786863744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33570 (or 33558 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 56.

The spelling of 30786863744 in words is "thirty billion, seven hundred eighty-six million, eight hundred sixty-three thousand, seven hundred forty-four".