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30155853851 = 79392397303
BaseRepresentation
bin11100000101011011…
…011101000000011011
32212211121120002122222
4130011123131000123
5443224344310401
621504200334255
72115201346154
oct340533350033
985747502588
1030155853851
1111875214372
125a1717438b
132ac7763606
14166101892b
15bb7662c1b
hex7056dd01b

30155853851 has 8 divisors (see below), whose sum is σ = 30545671680. Its totient is φ = 29766238632.

The previous prime is 30155853829. The next prime is 30155853877. The reversal of 30155853851 is 15835855103.

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 30155853851 - 234 = 12975984667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30155856851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261266 + ... + 358568.

It is an arithmetic number, because the mean of its divisors is an integer number (3818208960).

Almost surely, 230155853851 is an apocalyptic number.

30155853851 is a deficient number, since it is larger than the sum of its proper divisors (389817829).

30155853851 is an equidigital number, since it uses as much as digits as its factorization.

30155853851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101305.

The product of its (nonzero) digits is 360000, while the sum is 44.

The spelling of 30155853851 in words is "thirty billion, one hundred fifty-five million, eight hundred fifty-three thousand, eight hundred fifty-one".

Divisors: 1 79 3923 97303 309917 7686937 381719669 30155853851