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131507126465 = 5111313910511259
BaseRepresentation
bin111101001111001101…
…1111000000011000001
3110120102221212012110112
41322132123320003001
54123311311021330
6140225154041105
712333604063031
oct1723633700301
9416387765415
10131507126465
11508543875a0
12215a1579195
13c52a1c0740
1465177058c1
15364a319795
hex1e9e6f80c1

131507126465 has 64 divisors (see below), whose sum is σ = 187057382400. Its totient is φ = 87496416000.

The previous prime is 131507126459. The next prime is 131507126489. The reversal of 131507126465 is 564621705131.

It is a happy number.

It is not a de Polignac number, because 131507126465 - 28 = 131507126209 is a prime.

It is a super-2 number, since 2×1315071264652 (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 104453006 + ... + 104454264.

It is an arithmetic number, because the mean of its divisors is an integer number (2922771600).

Almost surely, 2131507126465 is an apocalyptic number.

It is an amenable number.

131507126465 is a deficient number, since it is larger than the sum of its proper divisors (55550255935).

131507126465 is a wasteful number, since it uses less digits than its factorization.

131507126465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 131507126465 in words is "one hundred thirty-one billion, five hundred seven million, one hundred twenty-six thousand, four hundred sixty-five".

Divisors: 1 5 11 13 55 65 139 143 695 715 1051 1259 1529 1807 5255 6295 7645 9035 11561 13663 13849 16367 19877 57805 68315 69245 81835 99385 146089 150293 175001 180037 730445 751465 875005 900185 1323209 1606979 1899157 1925011 2275013 6616045 8034895 9495785 9625055 11375065 14555299 17201717 20890727 25025143 72776495 86008585 104453635 125125715 183926051 189218887 919630255 946094435 2023186561 2391038663 10115932805 11955193315 26301425293 131507126465