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30275215361 = 269112547269
BaseRepresentation
bin11100001100100010…
…110010000000000001
32220010221011021212122
4130030202302000001
5444000423342421
621524102534025
72121151040666
oct341442620001
986127137778
1030275215361
111192662a446
125a4b137315
132b163c5a21
141672c09a6d
15bc2d8e2ab
hex70c8b2001

30275215361 has 4 divisors (see below), whose sum is σ = 30387762900. Its totient is φ = 30162667824.

The previous prime is 30275215297. The next prime is 30275215379. The reversal of 30275215361 is 16351257203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16351257203 = 17961838659.

It can be written as a sum of positive squares in 2 ways, for example, as 15741466225 + 14533749136 = 125465^2 + 120556^2 .

It is a cyclic number.

It is not a de Polignac number, because 30275215361 - 26 = 30275215297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30275217361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56273366 + ... + 56273903.

It is an arithmetic number, because the mean of its divisors is an integer number (7596940725).

Almost surely, 230275215361 is an apocalyptic number.

It is an amenable number.

30275215361 is a deficient number, since it is larger than the sum of its proper divisors (112547539).

30275215361 is a wasteful number, since it uses less digits than its factorization.

30275215361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112547538.

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 30275215361 in words is "thirty billion, two hundred seventy-five million, two hundred fifteen thousand, three hundred sixty-one".

Divisors: 1 269 112547269 30275215361