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30545034145 = 521134783437
BaseRepresentation
bin11100011100101000…
…000011101110100001
32220211201212111122221
4130130220003232201
51000024012043040
622010542031041
72130635335453
oct343450035641
986751774587
1030545034145
1111a5496a27a
125b05578481
132b5a287202
14169a9a42d3
15bdb8da74a
hex71ca03ba1

30545034145 has 16 divisors (see below), whose sum is σ = 36934331328. Its totient is φ = 24249839040.

The previous prime is 30545034127. The next prime is 30545034193. The reversal of 30545034145 is 54143054503.

It is not a de Polignac number, because 30545034145 - 27 = 30545034017 is a prime.

It is a super-2 number, since 2×305450341452 (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30545034145.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324367 + ... + 407803.

It is an arithmetic number, because the mean of its divisors is an integer number (2308395708).

Almost surely, 230545034145 is an apocalyptic number.

It is an amenable number.

30545034145 is a deficient number, since it is larger than the sum of its proper divisors (6389297183).

30545034145 is a wasteful number, since it uses less digits than its factorization.

30545034145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84000.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 30545034145 its reverse (54143054503), we get a palindrome (84688088648).

The spelling of 30545034145 in words is "thirty billion, five hundred forty-five million, thirty-four thousand, one hundred forty-five".

Divisors: 1 5 211 347 1055 1735 73217 83437 366085 417185 17605207 28952639 88026035 144763195 6109006829 30545034145