30561206623242 has 64 divisors (see below), whose sum is σ = 67335967595520. Its totient is φ = 9203909831424.

The previous prime is 30561206623193. The next prime is 30561206623243. The reversal of 30561206623242 is 24232660216503.

It is a junction number, because it is equal to n+sod(n) for n = 30561206623194 and 30561206623203.

It is not an unprimeable number, because it can be changed into a prime (30561206623243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16409688 + ... + 18176915.

It is an arithmetic number, because the mean of its divisors is an integer number (1052124493680).

Almost surely, 2^{30561206623242} is an apocalyptic number.

30561206623242 is an abundant number, since it is smaller than the sum of its proper divisors (36774760972278).

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

30561206623242 is a wasteful number, since it uses less digits than its factorization.

30561206623242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34586987.

The product of its (nonzero) digits is 622080, while the sum is 42.

Adding to 30561206623242 its reverse (24232660216503), we get a palindrome (54793866839745).

The spelling of 30561206623242 in words is "thirty trillion, five hundred sixty-one billion, two hundred six million, six hundred twenty-three thousand, two hundred forty-two".