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80810917430 = 2521154170793
BaseRepresentation
bin100101101000010110…
…1001011111000110110
321201120211222221120212
41023100231023320312
52311000043324210
6101042442225422
75560366315235
oct1132055137066
9251524887525
1080810917430
11312a9724381
12137b34b5272
13780b13b009
143ca8746b1c
15217e7a0805
hex12d0b4be36

80810917430 has 32 divisors (see below), whose sum is σ = 146421247968. Its totient is φ = 32111251200.

The previous prime is 80810917399. The next prime is 80810917457. The reversal of 80810917430 is 3471901808.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1106114 + ... + 1176906.

It is an arithmetic number, because the mean of its divisors is an integer number (4575663999).

Almost surely, 280810917430 is an apocalyptic number.

80810917430 is a deficient number, since it is larger than the sum of its proper divisors (65610330538).

80810917430 is a wasteful number, since it uses less digits than its factorization.

80810917430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71552.

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 80810917430 in words is "eighty billion, eight hundred ten million, nine hundred seventeen thousand, four hundred thirty".

Divisors: 1 2 5 10 211 422 541 1055 1082 2110 2705 5410 70793 114151 141586 228302 353965 570755 707930 1141510 14937323 29874646 38299013 74686615 76598026 149373230 191495065 382990130 8081091743 16162183486 40405458715 80810917430