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869642818041 = 31931501973779
BaseRepresentation
bin11001010011110101100…
…00000101000111111001
310002010200220101110022210
430221322300011013321
5103222012030134131
61503301451405333
7116554362662604
oct14517260050771
93063626343283
10869642818041
113058a4776768
12120661753849
13640123c4b4a
143013b76133b
151794c39b146
hexca7ac051f9

869642818041 has 8 divisors (see below), whose sum is σ = 1165531653280. Its totient is φ = 576757930752.

The previous prime is 869642818003. The next prime is 869642818073. The reversal of 869642818041 is 140818246968.

It is a happy number.

869642818041 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 869642818041 - 29 = 869642817529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (869642818841) 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, 750986311 + ... + 750987468.

It is an arithmetic number, because the mean of its divisors is an integer number (145691456660).

Almost surely, 2869642818041 is an apocalyptic number.

It is an amenable number.

869642818041 is a deficient number, since it is larger than the sum of its proper divisors (295888835239).

869642818041 is a wasteful number, since it uses less digits than its factorization.

869642818041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501973975.

The product of its (nonzero) digits is 5308416, while the sum is 57.

The spelling of 869642818041 in words is "eight hundred sixty-nine billion, six hundred forty-two million, eight hundred eighteen thousand, forty-one".

Divisors: 1 3 193 579 1501973779 4505921337 289880939347 869642818041