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64289199319 = 1720071188417
BaseRepresentation
bin111011110111111011…
…110101010011010111
320010221102110201002021
4323313323311103113
52023131013334234
645311204354011
74434101114662
oct736773652327
9203842421067
1064289199319
11252a0638a94
12105623a5907
1360a7267557
14317c3a86d9
151a140a19b4
hexef7ef54d7

64289199319 has 8 divisors (see below), whose sum is σ = 68074669728. Its totient is φ = 60504145920.

The previous prime is 64289199313. The next prime is 64289199329. The reversal of 64289199319 is 91399198246.

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 64289199319 - 29 = 64289198807 is a prime.

It is a super-3 number, since 3×642891993193 (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64289199313) 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, 246999 + ... + 435415.

It is an arithmetic number, because the mean of its divisors is an integer number (8509333716).

Almost surely, 264289199319 is an apocalyptic number.

64289199319 is a deficient number, since it is larger than the sum of its proper divisors (3785470409).

64289199319 is a wasteful number, since it uses less digits than its factorization.

64289199319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208505.

The product of its digits is 7558272, while the sum is 61.

The spelling of 64289199319 in words is "sixty-four billion, two hundred eighty-nine million, one hundred ninety-nine thousand, three hundred nineteen".

Divisors: 1 17 20071 188417 341207 3203089 3781717607 64289199319