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18660950045 = 56571567979
BaseRepresentation
bin10001011000010001…
…111000000000011101
31210011111212111000222
4101120101320000131
5301204200400140
612323412531125
71230302313113
oct213021700035
953144774028
1018660950045
117a0668aa71
123749620aa5
1319b514969a
14c9051bab3
157434155b5
hex45847801d

18660950045 has 8 divisors (see below), whose sum is σ = 22396587360. Its totient is φ = 14926461840.

The previous prime is 18660950039. The next prime is 18660950059. The reversal of 18660950045 is 54005906681.

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

It is not a de Polignac number, because 18660950045 - 218 = 18660687901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18660949978 and 18660950005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251135 + ... + 316844.

It is an arithmetic number, because the mean of its divisors is an integer number (2799573420).

Almost surely, 218660950045 is an apocalyptic number.

It is an amenable number.

18660950045 is a deficient number, since it is larger than the sum of its proper divisors (3735637315).

18660950045 is an equidigital number, since it uses as much as digits as its factorization.

18660950045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574555.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 18660950045 in words is "eighteen billion, six hundred sixty million, nine hundred fifty thousand, forty-five".

Divisors: 1 5 6571 32855 567979 2839895 3732190009 18660950045