30861443652 has 96 divisors (see below), whose sum is σ = 81998622720. Its totient is φ = 8955515520.

The previous prime is 30861443651. The next prime is 30861443653. The reversal of 30861443652 is 25634416803.

It is an interprime number because it is at equal distance from previous prime (30861443651) and next prime (30861443653).

It is not an unprimeable number, because it can be changed into a prime (30861443651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 637627 + ... + 684317.

It is an arithmetic number, because the mean of its divisors is an integer number (854152320).

Almost surely, 2^30861443652 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 30861443652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40999311360).

30861443652 is an abundant number, since it is smaller than the sum of its proper divisors (51137179068).

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

30861443652 is a wasteful number, since it uses less digits than its factorization.

30861443652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46953 (or 46951 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 30861443652 in words is "thirty billion, eight hundred sixty-one million, four hundred forty-three thousand, six hundred fifty-two".