Base | Representation |
---|---|
bin | 100101010011011111… |
… | …1010001011011100111 |
3 | 21122210002000020211220 |
4 | 1022212333101123213 |
5 | 2303031410000110 |
6 | 100445201031423 |
7 | 5534140253256 |
oct | 1124677213347 |
9 | 248702006756 |
10 | 80111015655 |
11 | 30a7a641860 |
12 | 13639025573 |
13 | 7729134558 |
14 | 3c3d7d679d |
15 | 213d0ec370 |
hex | 12a6fd16e7 |
80111015655 has 32 divisors (see below), whose sum is σ = 147189623040. Its totient is φ = 36797402880.
The previous prime is 80111015609. The next prime is 80111015659. The reversal of 80111015655 is 55651011108.
It is not a de Polignac number, because 80111015655 - 211 = 80111013607 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (33).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80111015659) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12773742 + ... + 12780011.
It is an arithmetic number, because the mean of its divisors is an integer number (4599675720).
Almost surely, 280111015655 is an apocalyptic number.
80111015655 is a deficient number, since it is larger than the sum of its proper divisors (67078607385).
80111015655 is a wasteful number, since it uses less digits than its factorization.
80111015655 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 25553791.
The product of its (nonzero) digits is 6000, while the sum is 33.
The spelling of 80111015655 in words is "eighty billion, one hundred eleven million, fifteen thousand, six hundred fifty-five".
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