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80905101875 = 5413233711701
BaseRepresentation
bin100101101011001010…
…0011110001000110011
321201211102020000100122
41023112110132020303
52311143201230000
6101100045040455
75562622006403
oct1132624361063
9251742200318
1080905101875
1131347903564
121381ab5612b
1378247c6760
143cb7062803
152187ba7085
hex12d651e233

80905101875 has 80 divisors (see below), whose sum is σ = 116690097216. Its totient is φ = 55598400000.

The previous prime is 80905101803. The next prime is 80905101947. The reversal of 80905101875 is 57810150908.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80905101803) and next prime (80905101947).

It is not a de Polignac number, because 80905101875 - 224 = 80888324659 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6908525 + ... + 6920225.

Almost surely, 280905101875 is an apocalyptic number.

80905101875 is a deficient number, since it is larger than the sum of its proper divisors (35784995341).

80905101875 is a wasteful number, since it uses less digits than its factorization.

80905101875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11794 (or 11779 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 44.

The spelling of 80905101875 in words is "eighty billion, nine hundred five million, one hundred one thousand, eight hundred seventy-five".

Divisors: 1 5 13 23 25 37 65 115 125 185 299 325 481 575 625 851 925 1495 1625 2405 2875 4255 4625 7475 8125 11063 11701 12025 14375 21275 23125 37375 55315 58505 60125 106375 152113 186875 269123 276575 292525 300625 432937 531875 760565 1345615 1382875 1462625 2164685 3498599 3802825 5628181 6728075 6914375 7313125 9957551 10823425 17492995 19014125 28140905 33640375 49787755 54117125 87464975 95070625 129448163 140704525 168201875 248938775 270585625 437324875 647240815 703522625 1244693875 2186624375 3236204075 3517613125 6223469375 16181020375 80905101875