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80667137471 = 656991227829
BaseRepresentation
bin100101100100000100…
…0101101010110111111
321201012211110011120012
41023020020231112333
52310201241344341
6101020304413435
75554002232544
oct1131010552677
9251184404505
1080667137471
1131235550368
121377331727b
1377b740930b
143c935dabcb
152171d4e0eb
hex12c822d5bf

80667137471 has 4 divisors (see below), whose sum is σ = 80668431000. Its totient is φ = 80665843944.

The previous prime is 80667137443. The next prime is 80667137491. The reversal of 80667137471 is 17473176608.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80667137471 - 26 = 80667137407 is a prime.

It is a super-3 number, since 3×806671374713 (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80667137401) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 548216 + ... + 679613.

It is an arithmetic number, because the mean of its divisors is an integer number (20167107750).

Almost surely, 280667137471 is an apocalyptic number.

80667137471 is a deficient number, since it is larger than the sum of its proper divisors (1293529).

80667137471 is a wasteful number, since it uses less digits than its factorization.

80667137471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293528.

The product of its (nonzero) digits is 1185408, while the sum is 50.

The spelling of 80667137471 in words is "eighty billion, six hundred sixty-seven million, one hundred thirty-seven thousand, four hundred seventy-one".

Divisors: 1 65699 1227829 80667137471