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6472720051 = 73129828203
BaseRepresentation
bin1100000011100110…
…11101111010110011
3121201002120020200021
412001303131322303
5101224004020201
62550140504311
7316254132640
oct60163357263
917632506607
106472720051
112821755416
12130784b097
137c1cbbc85
14455902dc7
1527d3b2ea1
hex181cddeb3

6472720051 has 8 divisors (see below), whose sum is σ = 7636020224. Its totient is φ = 5369076360.

The previous prime is 6472720027. The next prime is 6472720147. The reversal of 6472720051 is 1500272746.

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

It is a cyclic number.

It is not a de Polignac number, because 6472720051 - 223 = 6464331443 is a prime.

It is a super-2 number, since 2×64727200512 = 83792209717234885202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6472719989 and 6472720016.

It is not an unprimeable number, because it can be changed into a prime (6472700051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14913885 + ... + 14914318.

It is an arithmetic number, because the mean of its divisors is an integer number (954502528).

Almost surely, 26472720051 is an apocalyptic number.

6472720051 is a deficient number, since it is larger than the sum of its proper divisors (1163300173).

6472720051 is a wasteful number, since it uses less digits than its factorization.

6472720051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29828241.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 6472720051 is about 80453.2165360714. The cubic root of 6472720051 is about 1863.6410785583.

Adding to 6472720051 its reverse (1500272746), we get a palindrome (7972992797).

The spelling of 6472720051 in words is "six billion, four hundred seventy-two million, seven hundred twenty thousand, fifty-one".

Divisors: 1 7 31 217 29828203 208797421 924674293 6472720051