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2661475147 = 31157546841
BaseRepresentation
bin1001111010100010…
…1110001101001011
320212111000221112121
42132220232031023
520422314201042
61120032352111
7122645110522
oct23650561513
96774027477
102661475147
111146373741
126233a5637
13335518486
141b36854b9
151089c5367
hex9ea2e34b

2661475147 has 8 divisors (see below), whose sum is σ = 2764833152. Its totient is φ = 2559211200.

The previous prime is 2661475133. The next prime is 2661475151. The reversal of 2661475147 is 7415741662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2661475147 - 215 = 2661442379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2661472147) 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 7 ways as a sum of consecutive naturals, for example, 268554 + ... + 278287.

It is an arithmetic number, because the mean of its divisors is an integer number (345604144).

Almost surely, 22661475147 is an apocalyptic number.

2661475147 is a deficient number, since it is larger than the sum of its proper divisors (103358005).

2661475147 is a wasteful number, since it uses less digits than its factorization.

2661475147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547029.

The product of its digits is 282240, while the sum is 43.

The square root of 2661475147 is about 51589.4867875229. The cubic root of 2661475147 is about 1385.8220644150.

It can be divided in two parts, 26614 and 75147, that added together give a square (101761 = 3192).

The spelling of 2661475147 in words is "two billion, six hundred sixty-one million, four hundred seventy-five thousand, one hundred forty-seven".

Divisors: 1 31 157 4867 546841 16952071 85854037 2661475147