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64092010897 = 617103876841
BaseRepresentation
bin111011101100001011…
…100111100110010001
320010102200102111102101
4323230023213212101
52022230023322042
645235442120401
74426155050425
oct735413474621
9203380374371
1064092010897
11251aa2a6452
1210508350101
136075455c05
143160118b85
151a01b006b7
hexeec2e7991

64092010897 has 4 divisors (see below), whose sum is σ = 64195888356. Its totient is φ = 63988133440.

The previous prime is 64092010849. The next prime is 64092010937. The reversal of 64092010897 is 79801029046.

It is a Cunningham number, because it is equal to 2531642+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79801029046 = 239900514523.

It can be written as a sum of positive squares in 2 ways, for example, as 1856231056 + 62235779841 = 43084^2 + 249471^2 .

It is a cyclic number.

It is not a de Polignac number, because 64092010897 - 235 = 29732272529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64092010837) 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, 51937804 + ... + 51939037.

It is an arithmetic number, because the mean of its divisors is an integer number (16048972089).

Almost surely, 264092010897 is an apocalyptic number.

It is an amenable number.

64092010897 is a deficient number, since it is larger than the sum of its proper divisors (103877459).

64092010897 is a wasteful number, since it uses less digits than its factorization.

64092010897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103877458.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 64092010897 in words is "sixty-four billion, ninety-two million, ten thousand, eight hundred ninety-seven".

Divisors: 1 617 103876841 64092010897