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30845332091 = 716192721727
BaseRepresentation
bin11100101110100001…
…100110101001111011
32221121122221020000002
4130232201212221323
51001132401111331
622100430303215
72141242665620
oct345641465173
987548836002
1030845332091
11120994275a2
125b8a057b0b
132ba755a7c2
1416c8814347
15c07e579cb
hex72e866a7b

30845332091 has 8 divisors (see below), whose sum is σ = 35273594880. Its totient is φ = 26422516008.

The previous prime is 30845332079. The next prime is 30845332099. The reversal of 30845332091 is 19023354803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30845332091 - 218 = 30845069947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30845332099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1349531 + ... + 1372196.

It is an arithmetic number, because the mean of its divisors is an integer number (4409199360).

Almost surely, 230845332091 is an apocalyptic number.

30845332091 is a deficient number, since it is larger than the sum of its proper divisors (4428262789).

30845332091 is a wasteful number, since it uses less digits than its factorization.

30845332091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723353.

The product of its (nonzero) digits is 77760, while the sum is 38.

Adding to 30845332091 its reverse (19023354803), we get a palindrome (49868686894).

The spelling of 30845332091 in words is "thirty billion, eight hundred forty-five million, three hundred thirty-two thousand, ninety-one".

Divisors: 1 7 1619 11333 2721727 19052089 4406476013 30845332091