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64056969901 = 179738845949
BaseRepresentation
bin111011101010000101…
…111100101010101101
320010100020111020012201
4323222011330222231
52022142041014101
645232151101501
74425251155201
oct735205745255
9203306436181
1064056969901
1125191542651
12104b8671891
13606b1075b2
1431595d6b01
1519ed9cce01
hexeea17caad

64056969901 has 8 divisors (see below), whose sum is σ = 68524255800. Its totient is φ = 59667376128.

The previous prime is 64056969883. The next prime is 64056969913. The reversal of 64056969901 is 10996965046.

It can be written as a sum of positive squares in 4 ways, for example, as 6976592676 + 57080377225 = 83526^2 + 238915^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64056969901 - 223 = 64048581293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64056969971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19421326 + ... + 19424623.

It is an arithmetic number, because the mean of its divisors is an integer number (8565531975).

Almost surely, 264056969901 is an apocalyptic number.

It is an amenable number.

64056969901 is a deficient number, since it is larger than the sum of its proper divisors (4467285899).

64056969901 is a wasteful number, since it uses less digits than its factorization.

64056969901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38846063.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The spelling of 64056969901 in words is "sixty-four billion, fifty-six million, nine hundred sixty-nine thousand, nine hundred one".

Divisors: 1 17 97 1649 38845949 660381133 3768057053 64056969901