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81092592614 = 2118976953857
BaseRepresentation
bin100101110000101111…
…1101100001111100110
321202022111000112022002
41023201133230033212
52312034200430424
6101130423405302
75600356443545
oct1134137541746
9252274015262
1081092592614
1131433722090
12138718b3832
1378545c1017
143cd3d0a15c
15219938ecae
hex12e17ec3e6

81092592614 has 32 divisors (see below), whose sum is σ = 134364938400. Its totient is φ = 36398039040.

The previous prime is 81092592611. The next prime is 81092592643. The reversal of 81092592614 is 41629529018.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81092592611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1478774 + ... + 1532630.

It is an arithmetic number, because the mean of its divisors is an integer number (4198904325).

Almost surely, 281092592614 is an apocalyptic number.

81092592614 is a deficient number, since it is larger than the sum of its proper divisors (53272345786).

81092592614 is a wasteful number, since it uses less digits than its factorization.

81092592614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54728.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 81092592614 in words is "eighty-one billion, ninety-two million, five hundred ninety-two thousand, six hundred fourteen".

Divisors: 1 2 11 22 89 178 769 979 1538 1958 8459 16918 53857 68441 107714 136882 592427 752851 1184854 1505702 4793273 9586546 41416033 52726003 82832066 105452006 455576363 911152726 3686026937 7372053874 40546296307 81092592614