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66284875001 = 235167557761
BaseRepresentation
bin111101101110111000…
…101110110011111001
320100002111200112110102
4331232320232303321
52041222412000001
650241214525145
74534413066302
oct755670566371
9210074615412
1066284875001
11261250a1734
1210a1a8067b5
136334859537
1432cb4597a9
151ace3ace6b
hexf6ee2ecf9

66284875001 has 8 divisors (see below), whose sum is σ = 69180336384. Its totient is φ = 63390539520.

The previous prime is 66284874979. The next prime is 66284875009. The reversal of 66284875001 is 10057848266.

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 66284875001 - 26 = 66284874937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66284875009) 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, 160040 + ... + 397721.

It is an arithmetic number, because the mean of its divisors is an integer number (8647542048).

Almost surely, 266284875001 is an apocalyptic number.

It is an amenable number.

66284875001 is a deficient number, since it is larger than the sum of its proper divisors (2895461383).

66284875001 is a wasteful number, since it uses less digits than its factorization.

66284875001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562951.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 66284875001 in words is "sixty-six billion, two hundred eighty-four million, eight hundred seventy-five thousand, one".

Divisors: 1 23 5167 118841 557761 12828503 2881951087 66284875001