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8148102225781 = 75725920328937
BaseRepresentation
bin111011010010010000010…
…1111010001111101110101
31001211221200020211222220211
41312210200233101331311
52031444303132211111
625155104140425421
71500452366111110
oct166444057217565
931757606758824
108148102225781
112661655316541
12ab71a6b48271
13471493c3bb9b
14202527d85577
15e1e3e126521
hex76920bd1f75

8148102225781 has 8 divisors (see below), whose sum is σ = 9312279919040. Its totient is φ = 6983965304928.

The previous prime is 8148102225733. The next prime is 8148102225799. The reversal of 8148102225781 is 1875222018418.

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 8148102225781 - 29 = 8148102225269 is a prime.

It is a super-2 number, since 2×81481022257812 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8148102225281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9763656 + ... + 10565281.

It is an arithmetic number, because the mean of its divisors is an integer number (1164034989880).

Almost surely, 28148102225781 is an apocalyptic number.

It is an amenable number.

8148102225781 is a deficient number, since it is larger than the sum of its proper divisors (1164177693259).

8148102225781 is a wasteful number, since it uses less digits than its factorization.

8148102225781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20386203.

The product of its (nonzero) digits is 573440, while the sum is 49.

The spelling of 8148102225781 in words is "eight trillion, one hundred forty-eight billion, one hundred two million, two hundred twenty-five thousand, seven hundred eighty-one".

Divisors: 1 7 57259 400813 20328937 142302559 1164014603683 8148102225781