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87066426419 = 712438060917
BaseRepresentation
bin101000100010110010…
…0000011110000110011
322022201210211201200222
41101011210003300303
52411303001121134
6103555303403255
76201405261620
oct1210544036063
9268653751628
1087066426419
1133a19800915
1214a5a45352b
138297127b1b
1442dd467347
1523e8a59a2e
hex1445903c33

87066426419 has 4 divisors (see below), whose sum is σ = 99504487344. Its totient is φ = 74628365496.

The previous prime is 87066426401. The next prime is 87066426463. The reversal of 87066426419 is 91462466078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87066426419 - 28 = 87066426163 is a prime.

It is a super-2 number, since 2×870664264192 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87066426019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6219030452 + ... + 6219030465.

It is an arithmetic number, because the mean of its divisors is an integer number (24876121836).

Almost surely, 287066426419 is an apocalyptic number.

87066426419 is a deficient number, since it is larger than the sum of its proper divisors (12438060925).

87066426419 is a wasteful number, since it uses less digits than its factorization.

87066426419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12438060924.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 87066426419 in words is "eighty-seven billion, sixty-six million, four hundred twenty-six thousand, four hundred nineteen".

Divisors: 1 7 12438060917 87066426419