30643253406 has 96 divisors (see below), whose sum is σ = 72663289920. Its totient is φ = 9293626368.

The previous prime is 30643253363. The next prime is 30643253489. The reversal of 30643253406 is 60435234603.

30643253406 is a `hidden beast` number, since 3 + 0 + 643 + 2 + 5 + 3 + 4 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1768935 + ... + 1786173.

It is an arithmetic number, because the mean of its divisors is an integer number (756909270).

Almost surely, 2^30643253406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30643253406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36331644960).

30643253406 is an abundant number, since it is smaller than the sum of its proper divisors (42020036514).

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

30643253406 is a wasteful number, since it uses less digits than its factorization.

30643253406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17458 (or 17455 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 36.

The spelling of 30643253406 in words is "thirty billion, six hundred forty-three million, two hundred fifty-three thousand, four hundred six".