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30554044261 = 1323313296369
BaseRepresentation
bin11100011101001010…
…011011011101100101
32220212100211021012221
4130131022123131211
51000033313404021
622011503112341
72131105043146
oct343512333545
986770737187
1030554044261
1111a59a63754
125b085a26b1
132b5c0c0340
14169bc6bacd
15bdc5ba241
hex71d29b765

30554044261 has 16 divisors (see below), whose sum is σ = 35442570240. Its totient is φ = 26107234560.

The previous prime is 30554044247. The next prime is 30554044271. The reversal of 30554044261 is 16244045503.

It is a cyclic number.

It is not a de Polignac number, because 30554044261 - 215 = 30554011493 is a prime.

It is a super-2 number, since 2×305540442612 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30554044201) 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, 1638916 + ... + 1657453.

It is an arithmetic number, because the mean of its divisors is an integer number (2215160640).

Almost surely, 230554044261 is an apocalyptic number.

30554044261 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30554044261 is a deficient number, since it is larger than the sum of its proper divisors (4888525979).

30554044261 is a wasteful number, since it uses less digits than its factorization.

30554044261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296436.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 30554044261 its reverse (16244045503), we get a palindrome (46798089764).

The spelling of 30554044261 in words is "thirty billion, five hundred fifty-four million, forty-four thousand, two hundred sixty-one".

Divisors: 1 13 23 31 299 403 713 9269 3296369 42852797 75816487 102187439 985614331 1328436707 2350311097 30554044261