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30542560137 = 33892142811
BaseRepresentation
bin11100011100011110…
…100111101110001001
32220211120012210222000
4130130132213232021
51000022343411022
622010413021213
72130605322555
oct343436475611
986746183860
1030542560137
1111a5352a541
125b04784809
132b598cc0bb
14169a51c865
15bdb59c6ac
hex71c7a7b89

30542560137 has 24 divisors (see below), whose sum is σ = 45762677280. Its totient is φ = 20132782560.

The previous prime is 30542560129. The next prime is 30542560183. The reversal of 30542560137 is 73106524503.

30542560137 is a `hidden beast` number, since 3 + 0 + 5 + 42 + 5 + 601 + 3 + 7 = 666.

It is not a de Polignac number, because 30542560137 - 23 = 30542560129 is a prime.

It is a super-2 number, since 2×305425601372 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30542560337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142462 + ... + 285272.

It is an arithmetic number, because the mean of its divisors is an integer number (1906778220).

Almost surely, 230542560137 is an apocalyptic number.

It is an amenable number.

30542560137 is a deficient number, since it is larger than the sum of its proper divisors (15220117143).

30542560137 is an equidigital number, since it uses as much as digits as its factorization.

30542560137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142998 (or 142903 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The spelling of 30542560137 in words is "thirty billion, five hundred forty-two million, five hundred sixty thousand, one hundred thirty-seven".

Divisors: 1 3 9 27 89 267 801 2403 7921 23763 71289 142811 213867 428433 1285299 3855897 12710179 38130537 114391611 343174833 1131205931 3393617793 10180853379 30542560137