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64380096653 = 173787064509
BaseRepresentation
bin111011111101010110…
…100101000010001101
320011011202111202210012
4323331112211002031
52023322301043103
645324212523005
74436253535535
oct737526450215
9204152452705
1064380096653
1125337982554
1210588920465
1360c0041a62
14318a4aa4c5
151a1c0592d8
hexefd5a508d

64380096653 has 4 divisors (see below), whose sum is σ = 68167161180. Its totient is φ = 60593032128.

The previous prime is 64380096647. The next prime is 64380096719. The reversal of 64380096653 is 35669008346.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26975763049 + 37404333604 = 164243^2 + 193402^2 .

It is a cyclic number.

It is not a de Polignac number, because 64380096653 - 224 = 64363319437 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 (64380096643) 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, 1893532238 + ... + 1893532271.

It is an arithmetic number, because the mean of its divisors is an integer number (17041790295).

Almost surely, 264380096653 is an apocalyptic number.

It is an amenable number.

64380096653 is a deficient number, since it is larger than the sum of its proper divisors (3787064527).

64380096653 is a wasteful number, since it uses less digits than its factorization.

64380096653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3787064526.

The product of its (nonzero) digits is 2799360, while the sum is 50.

The spelling of 64380096653 in words is "sixty-four billion, three hundred eighty million, ninety-six thousand, six hundred fifty-three".

Divisors: 1 17 3787064509 64380096653