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69257396249 is a prime number
BaseRepresentation
bin100000010000000010…
…0000000000000011001
320121202200000021000222
41000200010000000121
52113314343134444
651452202205425
75001156104066
oct1004004000031
9217680007028
1069257396249
112740aaa3968
121150a1b3875
1366b963c552
1434d014bc6d
151c05324eee
hex1020100019

69257396249 has 2 divisors, whose sum is σ = 69257396250. Its totient is φ = 69257396248.

The previous prime is 69257396209. The next prime is 69257396251. The reversal of 69257396249 is 94269375296.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69257396224 + 25 = 263168^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 69257396249 - 212 = 69257392153 is a prime.

Together with 69257396251, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 69257396191 and 69257396200.

It is not a weakly prime, because it can be changed into another prime (69257396209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34628698124 + 34628698125.

It is an arithmetic number, because the mean of its divisors is an integer number (34628698125).

Almost surely, 269257396249 is an apocalyptic number.

It is an amenable number.

69257396249 is a deficient number, since it is larger than the sum of its proper divisors (1).

69257396249 is an equidigital number, since it uses as much as digits as its factorization.

69257396249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44089920, while the sum is 62.

The spelling of 69257396249 in words is "sixty-nine billion, two hundred fifty-seven million, three hundred ninety-six thousand, two hundred forty-nine".