Search a number
-
+
71979098107 = 711311909091
BaseRepresentation
bin100001100001001001…
…0011101111111111011
320212210100101001002111
41003002102131333323
52134403122114412
653022225513151
75125465144660
oct1030222357773
9225710331074
1071979098107
1128587362844
1211b497a27b7
136a31483c17
1436ab7cda67
151d142452a7
hex10c249dffb

71979098107 has 8 divisors (see below), whose sum is σ = 82269189632. Its totient is φ = 61690847400.

The previous prime is 71979098053. The next prime is 71979098209. The reversal of 71979098107 is 70189097917.

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

It is a de Polignac number, because none of the positive numbers 2k-71979098107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71979098707) 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, 375369 + ... + 533722.

It is an arithmetic number, because the mean of its divisors is an integer number (10283648704).

Almost surely, 271979098107 is an apocalyptic number.

71979098107 is a deficient number, since it is larger than the sum of its proper divisors (10290091525).

71979098107 is a wasteful number, since it uses less digits than its factorization.

71979098107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920409.

The product of its (nonzero) digits is 2000376, while the sum is 58.

The spelling of 71979098107 in words is "seventy-one billion, nine hundred seventy-nine million, ninety-eight thousand, one hundred seven".

Divisors: 1 7 11311 79177 909091 6363637 10282728301 71979098107