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79164207871 = 728319465013
BaseRepresentation
bin100100110111010001…
…1011111001011111111
321120100002102102201221
41021232203133023333
52244112014122441
6100211215414211
75501522443600
oct1115643371377
9246302372657
1079164207871
113063414a091
1213413b24367
137607c2c768
143b8db73da7
1520d4e268d1
hex126e8df2ff

79164207871 has 12 divisors (see below), whose sum is σ = 93198487032. Its totient is φ = 67037501328.

The previous prime is 79164207841. The next prime is 79164207901. The reversal of 79164207871 is 17870246197.

It is an interprime number because it is at equal distance from previous prime (79164207841) and next prime (79164207901).

It is not a de Polignac number, because 79164207871 - 211 = 79164205823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79164207841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9728440 + ... + 9736573.

It is an arithmetic number, because the mean of its divisors is an integer number (7766540586).

Almost surely, 279164207871 is an apocalyptic number.

79164207871 is a deficient number, since it is larger than the sum of its proper divisors (14034279161).

79164207871 is a wasteful number, since it uses less digits than its factorization.

79164207871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19465110 (or 19465103 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 52.

The spelling of 79164207871 in words is "seventy-nine billion, one hundred sixty-four million, two hundred seven thousand, eight hundred seventy-one".

Divisors: 1 7 49 83 581 4067 19465013 136255091 953785637 1615596079 11309172553 79164207871