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80501586461 = 372768978577
BaseRepresentation
bin100101011111001000…
…1001011101000011101
321200210021221022021022
41022332101023220131
52304331401231321
6100552032213525
75546622123542
oct1127621135035
9250707838238
1080501586461
113116005744a
121372799a2a5
13778c02403a
143c79624bc9
15216254bdab
hex12be44ba1d

80501586461 has 8 divisors (see below), whose sum is σ = 82681343160. Its totient is φ = 78322042368.

The previous prime is 80501586449. The next prime is 80501586467. The reversal of 80501586461 is 16468510508.

It can be written as a sum of positive squares in 4 ways, for example, as 24564606361 + 55936980100 = 156731^2 + 236510^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80501586461 - 214 = 80501570077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80501586467) 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 7 ways as a sum of consecutive naturals, for example, 985205 + ... + 1063781.

It is an arithmetic number, because the mean of its divisors is an integer number (10335167895).

Almost surely, 280501586461 is an apocalyptic number.

It is an amenable number.

80501586461 is a deficient number, since it is larger than the sum of its proper divisors (2179756699).

80501586461 is a wasteful number, since it uses less digits than its factorization.

80501586461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106303.

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 80501586461 in words is "eighty billion, five hundred one million, five hundred eighty-six thousand, four hundred sixty-one".

Divisors: 1 37 27689 78577 1024493 2907349 2175718553 80501586461