30643353342 has 144 divisors (see below), whose sum is σ = 79487330832. Its totient is φ = 8501794560.

The previous prime is 30643353341. The next prime is 30643353359. The reversal of 30643353342 is 24335334603.

30643353342 is a `hidden beast` number, since 3 + 0 + 643 + 3 + 5 + 3 + 3 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 30643353297 and 30643353306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30643353341) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8206908 + ... + 8210640.

It is an arithmetic number, because the mean of its divisors is an integer number (551995353).

Almost surely, 2^30643353342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30643353342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39743665416).

30643353342 is an abundant number, since it is smaller than the sum of its proper divisors (48843977490).

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

30643353342 is a wasteful number, since it uses less digits than its factorization.

30643353342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4023 (or 4013 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 36.

Adding to 30643353342 its reverse (24335334603), we get a palindrome (54978687945).

The spelling of 30643353342 in words is "thirty billion, six hundred forty-three million, three hundred fifty-three thousand, three hundred forty-two".