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69899310379 = 207593367181
BaseRepresentation
bin100000100011001010…
…0101101010100101011
320200102101212212200101
41001012110231110223
52121123210413004
652040012450231
75023112222623
oct1010624552453
9220371785611
1069899310379
112770a37a508
1211669179977
13678c621cb2
1435514c5883
151c41871ba4
hex104652d52b

69899310379 has 4 divisors (see below), whose sum is σ = 69902698320. Its totient is φ = 69895922440.

The previous prime is 69899310361. The next prime is 69899310391. The reversal of 69899310379 is 97301399896.

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

It is a cyclic number.

It is not a de Polignac number, because 69899310379 - 211 = 69899308331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69899310379.

It is not an unprimeable number, because it can be changed into a prime (69899314379) 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, 1662832 + ... + 1704349.

It is an arithmetic number, because the mean of its divisors is an integer number (17475674580).

Almost surely, 269899310379 is an apocalyptic number.

69899310379 is a deficient number, since it is larger than the sum of its proper divisors (3387941).

69899310379 is a wasteful number, since it uses less digits than its factorization.

69899310379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387940.

The product of its (nonzero) digits is 19840464, while the sum is 64.

The spelling of 69899310379 in words is "sixty-nine billion, eight hundred ninety-nine million, three hundred ten thousand, three hundred seventy-nine".

Divisors: 1 20759 3367181 69899310379