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7240161061 = 72147758389
BaseRepresentation
bin1101011111000110…
…00001011100100101
3200200120122021211101
412233203001130211
5104311440123221
63154233440101
7344263232200
oct65743013445
920616567741
107240161061
113085978191
1214a0870031
138b4cb2193
144c97d4937
152c5957d91
hex1af8c1725

7240161061 has 6 divisors (see below), whose sum is σ = 8422228230. Its totient is φ = 6205852296.

The previous prime is 7240161043. The next prime is 7240161101. The reversal of 7240161061 is 1601610427.

7240161061 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6898133025 + 342028036 = 83055^2 + 18494^2 .

It is not a de Polignac number, because 7240161061 - 213 = 7240152869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7240161001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73879146 + ... + 73879243.

It is an arithmetic number, because the mean of its divisors is an integer number (1403704705).

Almost surely, 27240161061 is an apocalyptic number.

It is an amenable number.

7240161061 is a deficient number, since it is larger than the sum of its proper divisors (1182067169).

7240161061 is a wasteful number, since it uses less digits than its factorization.

7240161061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147758403 (or 147758396 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 7240161061 is about 85089.1359751643. The cubic root of 7240161061 is about 1934.5623993803.

Adding to 7240161061 its reverse (1601610427), we get a palindrome (8841771488).

The spelling of 7240161061 in words is "seven billion, two hundred forty million, one hundred sixty-one thousand, sixty-one".

Divisors: 1 7 49 147758389 1034308723 7240161061