30636856704 has 128 divisors (see below), whose sum is σ = 86115156480. Its totient is φ = 9630494720.

The previous prime is 30636856643. The next prime is 30636856709. The reversal of 30636856704 is 40765863603.

It is a happy number.

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 (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30636856709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602644 + ... + 651500.

It is an arithmetic number, because the mean of its divisors is an integer number (672774660).

Almost surely, 2^30636856704 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 30636856704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43057578240).

30636856704 is an abundant number, since it is smaller than the sum of its proper divisors (55478299776).

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

30636856704 is a wasteful number, since it uses less digits than its factorization.

30636856704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48968 (or 48956 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 30636856704 in words is "thirty billion, six hundred thirty-six million, eight hundred fifty-six thousand, seven hundred four".