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500241661661 = 771463094523
BaseRepresentation
bin1110100011110001011…
…10011111111011011101
31202211012200221101201102
413101320232133323131
531143443331133121
61021450254522445
751066311652320
oct7217056377335
91684180841642
10500241661661
11183173416485
1280b49b06425
1338232231041
141a2d736c7b7
15d02be6b90b
hex7478b9fedd

500241661661 has 4 divisors (see below), whose sum is σ = 571704756192. Its totient is φ = 428778567132.

The previous prime is 500241661643. The next prime is 500241661721. The reversal of 500241661661 is 166166142005.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166166142005 = 533233228401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-500241661661 is a prime.

It is a super-2 number, since 2×5002416616612 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500241661631) 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, 35731547255 + ... + 35731547268.

It is an arithmetic number, because the mean of its divisors is an integer number (142926189048).

Almost surely, 2500241661661 is an apocalyptic number.

It is an amenable number.

500241661661 is a deficient number, since it is larger than the sum of its proper divisors (71463094531).

500241661661 is an equidigital number, since it uses as much as digits as its factorization.

500241661661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71463094530.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 500241661661 in words is "five hundred billion, two hundred forty-one million, six hundred sixty-one thousand, six hundred sixty-one".

Divisors: 1 7 71463094523 500241661661