30255206613506 has 24 divisors (see below), whose sum is σ = 52792586830476. Its totient is φ = 12966433966080.

The previous prime is 30255206613421. The next prime is 30255206613571. The reversal of 30255206613506 is 60531660255203.

It can be written as a sum of positive squares in 2 ways, for example, as 24783560499481 + 5471646114025 = 4978309^2 + 2339155^2 .

It is a super-2 number, since 2×30255206613506² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15818210 + ... + 17627426.

Almost surely, 2^{30255206613506} is an apocalyptic number.

30255206613506 is a deficient number, since it is larger than the sum of its proper divisors (22537380216970).

30255206613506 is a wasteful number, since it uses less digits than its factorization.

30255206613506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979874 (or 1979867 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 44.

Adding to 30255206613506 its reverse (60531660255203), we get a palindrome (90786866868709).

The spelling of 30255206613506 in words is "thirty trillion, two hundred fifty-five billion, two hundred six million, six hundred thirteen thousand, five hundred six".