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13690123458 = 23117910492503
BaseRepresentation
bin11001011111111111…
…01011010011000010
31022100002101022212120
430233333223103002
5211014132422313
610142242505110
7663153062244
oct145777532302
938302338776
1013690123458
115895799420
1227a0965196
1313a236378b
1493c292094
15551d22d23
hex32ffeb4c2

13690123458 has 64 divisors (see below), whose sum is σ = 30288384000. Its totient is φ = 4090469760.

The previous prime is 13690123423. The next prime is 13690123463. The reversal of 13690123458 is 85432109631.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5468235 + ... + 5470737.

It is an arithmetic number, because the mean of its divisors is an integer number (473256000).

Almost surely, 213690123458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13690123458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15144192000).

13690123458 is an abundant number, since it is smaller than the sum of its proper divisors (16598260542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13690123458 is a wasteful number, since it uses less digits than its factorization.

13690123458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 13690123458 in words is "thirteen billion, six hundred ninety million, one hundred twenty-three thousand, four hundred fifty-eight".

Divisors: 1 2 3 6 11 22 33 66 79 158 237 474 869 1049 1738 2098 2503 2607 3147 5006 5214 6294 7509 11539 15018 23078 27533 34617 55066 69234 82599 82871 165198 165742 197737 248613 395474 497226 593211 911581 1186422 1823162 2175107 2625647 2734743 4350214 5251294 5469486 6525321 7876941 13050642 15753882 28882117 57764234 86646351 173292702 207426113 414852226 622278339 1244556678 2281687243 4563374486 6845061729 13690123458