30661400061243 has 96 divisors (see below), whose sum is σ = 52621053788160. Its totient is φ = 16842285270720.

The previous prime is 30661400061209. The next prime is 30661400061251. The reversal of 30661400061243 is 34216000416603.

30661400061243 is a `hidden beast` number, since 3 + 0 + 6 + 6 + 1 + 400 + 0 + 6 + 1 + 243 = 666.

It is not a de Polignac number, because 30661400061243 - 2¹⁷ = 30661399930171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30661400061198 and 30661400061207.

It is not an unprimeable number, because it can be changed into a prime (30661400061283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 44335396 + ... + 45021662.

It is an arithmetic number, because the mean of its divisors is an integer number (548135976960).

Almost surely, 2^{30661400061243} is an apocalyptic number.

30661400061243 is a deficient number, since it is larger than the sum of its proper divisors (21959653726917).

30661400061243 is a wasteful number, since it uses less digits than its factorization.

30661400061243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686597 (or 686594 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

Adding to 30661400061243 its reverse (34216000416603), we get a palindrome (64877400477846).

The spelling of 30661400061243 in words is "thirty trillion, six hundred sixty-one billion, four hundred million, sixty-one thousand, two hundred forty-three".