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806237381053 = 1362018260081
BaseRepresentation
bin10111011101101110111…
…11100010000110111101
32212002001001212112020201
423232313133202012331
5101202133232143203
61414214053043501
7112151212444306
oct13566737420675
92762031775221
10806237381053
11290a17a8a475
12110307326591
135b04928a1b0
142b0448c77ad
1515e8abb9e1d
hexbbb77e21bd

806237381053 has 4 divisors (see below), whose sum is σ = 868255641148. Its totient is φ = 744219120960.

The previous prime is 806237381023. The next prime is 806237381069. The reversal of 806237381053 is 350183732608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 436236472324 + 370000908729 = 660482^2 + 608277^2 .

It is a cyclic number.

It is not a de Polignac number, because 806237381053 - 229 = 805700510141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 806237380994 and 806237381012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806237381023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31009130028 + ... + 31009130053.

It is an arithmetic number, because the mean of its divisors is an integer number (217063910287).

Almost surely, 2806237381053 is an apocalyptic number.

It is an amenable number.

806237381053 is a deficient number, since it is larger than the sum of its proper divisors (62018260095).

806237381053 is a wasteful number, since it uses less digits than its factorization.

806237381053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62018260094.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 806237381053 in words is "eight hundred six billion, two hundred thirty-seven million, three hundred eighty-one thousand, fifty-three".

Divisors: 1 13 62018260081 806237381053