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6400088741 is a prime number
BaseRepresentation
bin1011111010111100…
…11001101010100101
3121112000220012020202
411331132121222211
5101101410314431
62535024040245
7314412566564
oct57536315245
917460805222
106400088741
112794757442
1212a7463085
137acc3b877
14449dd7bdb
15276d178cb
hex17d799aa5

6400088741 has 2 divisors, whose sum is σ = 6400088742. Its totient is φ = 6400088740.

The previous prime is 6400088711. The next prime is 6400088743. The reversal of 6400088741 is 1478800046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3925523716 + 2474565025 = 62654^2 + 49745^2 .

It is a cyclic number.

It is not a de Polignac number, because 6400088741 - 230 = 5326346917 is a prime.

It is a super-2 number, since 2×64000887412 = 81922271785349930162, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 6400088743, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6400088695 and 6400088704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6400088743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200044370 + 3200044371.

It is an arithmetic number, because the mean of its divisors is an integer number (3200044371).

Almost surely, 26400088741 is an apocalyptic number.

It is an amenable number.

6400088741 is a deficient number, since it is larger than the sum of its proper divisors (1).

6400088741 is an equidigital number, since it uses as much as digits as its factorization.

6400088741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 6400088741 is about 80000.5546293274. The cubic root of 6400088741 is about 1856.6441146395.

Adding to 6400088741 its reverse (1478800046), we get a palindrome (7878888787).

The spelling of 6400088741 in words is "six billion, four hundred million, eighty-eight thousand, seven hundred forty-one".