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80472268879 is a prime number
BaseRepresentation
bin100101011110010000…
…1010110000001001111
321200201020202211002221
41022330201112001033
52304301400101004
6100545104000211
75546114666542
oct1127441260117
9250636684087
1080472268879
1131145552742
121371a000067
137785c2a862
143c75792859
15215ebaa354
hex12bc85604f

80472268879 has 2 divisors, whose sum is σ = 80472268880. Its totient is φ = 80472268878.

The previous prime is 80472268769. The next prime is 80472268889. The reversal of 80472268879 is 97886227408.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-80472268879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80472268889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40236134439 + 40236134440.

It is an arithmetic number, because the mean of its divisors is an integer number (40236134440).

Almost surely, 280472268879 is an apocalyptic number.

80472268879 is a deficient number, since it is larger than the sum of its proper divisors (1).

80472268879 is an equidigital number, since it uses as much as digits as its factorization.

80472268879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21676032, while the sum is 61.

The spelling of 80472268879 in words is "eighty billion, four hundred seventy-two million, two hundred sixty-eight thousand, eight hundred seventy-nine".