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79990234309472 = 258191305175781
BaseRepresentation
bin10010001100000000101101…
…100000000110001101100000
3101111012222202221222112200012
4102030000231200012031200
540441024444440400342
6442043001211544052
722564050401120354
oct2214005540061540
9344188687875605
1079990234309472
112353a738a21323
128b7a78775b028
13358307b882706
1415a77959c5464
1593aae2410b82
hex48c02d806360

79990234309472 has 24 divisors (see below), whose sum is σ = 157500000387072. Its totient is φ = 39990234211200.

The previous prime is 79990234309439. The next prime is 79990234309483. The reversal of 79990234309472 is 27490343209997.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152325779 + ... + 152850002.

It is an arithmetic number, because the mean of its divisors is an integer number (6562500016128).

Almost surely, 279990234309472 is an apocalyptic number.

It is an amenable number.

79990234309472 is a deficient number, since it is larger than the sum of its proper divisors (77509766077600).

79990234309472 is a wasteful number, since it uses less digits than its factorization.

79990234309472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305183982 (or 305183974 counting only the distinct ones).

The product of its (nonzero) digits is 185177664, while the sum is 68.

The spelling of 79990234309472 in words is "seventy-nine trillion, nine hundred ninety billion, two hundred thirty-four million, three hundred nine thousand, four hundred seventy-two".

Divisors: 1 2 4 8 16 32 8191 16382 32764 65528 131056 262112 305175781 610351562 1220703124 2441406248 4882812496 9765624992 2499694822171 4999389644342 9998779288684 19997558577368 39995117154736 79990234309472