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268201909873 = 1709547928643
BaseRepresentation
bin1111100111001000010…
…1000101111001110001
3221122021110012200102101
43321302011011321301
513343234142103443
6323113225420401
725243202422252
oct3716205057161
9848243180371
10268201909873
11a381aa93577
1243b9033a701
131c3a3094b71
14cda3d9ab29
156e9aca784d
hex3e72145e71

268201909873 has 8 divisors (see below), whose sum is σ = 268417195200. Its totient is φ = 267986696208.

The previous prime is 268201909853. The next prime is 268201909891. The reversal of 268201909873 is 378909102862.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-268201909873 is a prime.

It is a super-2 number, since 2×2682019098732 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268201909853) 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, 9349290 + ... + 9377932.

It is an arithmetic number, because the mean of its divisors is an integer number (33552149400).

Almost surely, 2268201909873 is an apocalyptic number.

It is an amenable number.

268201909873 is a deficient number, since it is larger than the sum of its proper divisors (215285327).

268201909873 is a wasteful number, since it uses less digits than its factorization.

268201909873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35831.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 268201909873 in words is "two hundred sixty-eight billion, two hundred one million, nine hundred nine thousand, eight hundred seventy-three".

Divisors: 1 1709 5479 28643 9363611 48950887 156934997 268201909873