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30056517061 = 47838776249
BaseRepresentation
bin11011111111100000…
…100000110111000101
32212120200122021012121
4123333200200313011
5443023432021221
621450251245541
72112554115424
oct337740406705
985520567177
1030056517061
111182413614a
1259a9a498b1
132aaccc294c
141651b5b2bb
15bada8ea41
hex6ff820dc5

30056517061 has 8 divisors (see below), whose sum is σ = 30700080000. Its totient is φ = 29413123488.

The previous prime is 30056517011. The next prime is 30056517079. The reversal of 30056517061 is 16071565003.

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

It is a cyclic number.

It is not a de Polignac number, because 30056517061 - 221 = 30054419909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30056517011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356065 + ... + 432313.

It is an arithmetic number, because the mean of its divisors is an integer number (3837510000).

Almost surely, 230056517061 is an apocalyptic number.

It is an amenable number.

30056517061 is a deficient number, since it is larger than the sum of its proper divisors (643562939).

30056517061 is an equidigital number, since it uses as much as digits as its factorization.

30056517061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84683.

The product of its (nonzero) digits is 18900, while the sum is 34.

The spelling of 30056517061 in words is "thirty billion, fifty-six million, five hundred seventeen thousand, sixty-one".

Divisors: 1 47 8387 76249 394189 3583703 639500363 30056517061