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71090955007 = 1279505910987
BaseRepresentation
bin100001000110101011…
…0011110001011111111
320210111110011200210121
41002031112132023333
52131043241030012
652354141515411
75064462101332
oct1021526361377
9223443150717
1071090955007
1128170a99786
1211940272b67
13691c47c367
14362587c619
151cb12aba07
hex108d59e2ff

71090955007 has 8 divisors (see below), whose sum is σ = 71167078400. Its totient is φ = 71014866264.

The previous prime is 71090954939. The next prime is 71090955037. The reversal of 71090955007 is 70055909017.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-71090955007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71090955037) 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, 6464968 + ... + 6475954.

It is an arithmetic number, because the mean of its divisors is an integer number (8895884800).

Almost surely, 271090955007 is an apocalyptic number.

71090955007 is a deficient number, since it is larger than the sum of its proper divisors (76123393).

71090955007 is a wasteful number, since it uses less digits than its factorization.

71090955007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17325.

The product of its (nonzero) digits is 99225, while the sum is 43.

The spelling of 71090955007 in words is "seventy-one billion, ninety million, nine hundred fifty-five thousand, seven".

Divisors: 1 1279 5059 10987 6470461 14052373 55583233 71090955007