30644603712 has 84 divisors (see below), whose sum is σ = 88202092836. Its totient is φ = 10172436480.

The previous prime is 30644603683. The next prime is 30644603851. The reversal of 30644603712 is 21730644603.

It is a happy number.

30644603712 is a `hidden beast` number, since 3 + 0 + 6 + 44 + 603 + 7 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23050526976 + 7594076736 = 151824^2 + 87144^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28438 + ... + 249194.

Almost surely, 2^30644603712 is an apocalyptic number.

30644603712 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30644603712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44101046418).

30644603712 is an abundant number, since it is smaller than the sum of its proper divisors (57557489124).

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

30644603712 is a wasteful number, since it uses less digits than its factorization.

30644603712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221016 (or 221003 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The spelling of 30644603712 in words is "thirty billion, six hundred forty-four million, six hundred three thousand, seven hundred twelve".