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159968116457 = 4123916324943
BaseRepresentation
bin1001010011111011010…
…1111011111011101001
3120021220110020021222222
42110332311323323221
510110103314211312
6201253251523425
714362105361162
oct2247665737351
9507813207888
10159968116457
1161929916626
1227004bb9575
1312114785516
147a575b4769
154263c90672
hex253ed7bee9

159968116457 has 8 divisors (see below), whose sum is σ = 164555435520. Its totient is φ = 155413447840.

The previous prime is 159968116411. The next prime is 159968116541. The reversal of 159968116457 is 754611869951.

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 159968116457 - 218 = 159967854313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159968116457.

It is not an unprimeable number, because it can be changed into a prime (159968115457) 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, 8152673 + ... + 8172270.

It is an arithmetic number, because the mean of its divisors is an integer number (20569429440).

Almost surely, 2159968116457 is an apocalyptic number.

It is an amenable number.

159968116457 is a deficient number, since it is larger than the sum of its proper divisors (4587319063).

159968116457 is a wasteful number, since it uses less digits than its factorization.

159968116457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16325223.

The product of its digits is 16329600, while the sum is 62.

The spelling of 159968116457 in words is "one hundred fifty-nine billion, nine hundred sixty-eight million, one hundred sixteen thousand, four hundred fifty-seven".

Divisors: 1 41 239 9799 16324943 669322663 3901661377 159968116457