30643471914 has 128 divisors (see below), whose sum is σ = 71306403840. Its totient is φ = 8764272000.

The previous prime is 30643471913. The next prime is 30643471927. The reversal of 30643471914 is 41917434603.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30643471913) 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 63 ways as a sum of consecutive naturals, for example, 10148697 + ... + 10151715.

It is an arithmetic number, because the mean of its divisors is an integer number (557081280).

Almost surely, 2^30643471914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30643471914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35653201920).

30643471914 is an abundant number, since it is smaller than the sum of its proper divisors (40662931926).

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

30643471914 is a wasteful number, since it uses less digits than its factorization.

30643471914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129 (or 3107 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 30643471914 in words is "thirty billion, six hundred forty-three million, four hundred seventy-one thousand, nine hundred fourteen".