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80663002281 = 3319315479371
BaseRepresentation
bin100101100011111100…
…0111011110010101001
321201012112200002011000
41023013320323302221
52310144212033111
6101020040025213
75553622130601
oct1130770736251
9251175602130
1080663002281
1131233186554
1213771a62209
1377b65bc064
143c92c41c01
1521717d3c56
hex12c7e3bca9

80663002281 has 16 divisors (see below), whose sum is σ = 120119926720. Its totient is φ = 53496702720.

The previous prime is 80663002243. The next prime is 80663002333. The reversal of 80663002281 is 18220036608.

It is not a de Polignac number, because 80663002281 - 210 = 80663001257 is a prime.

It is a super-2 number, since 2×806630022812 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80663002201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7734475 + ... + 7744896.

It is an arithmetic number, because the mean of its divisors is an integer number (7507495420).

Almost surely, 280663002281 is an apocalyptic number.

It is an amenable number.

80663002281 is a deficient number, since it is larger than the sum of its proper divisors (39456924439).

80663002281 is a wasteful number, since it uses less digits than its factorization.

80663002281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15479573 (or 15479567 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

Adding to 80663002281 its reverse (18220036608), we get a palindrome (98883038889).

The spelling of 80663002281 in words is "eighty billion, six hundred sixty-three million, two thousand, two hundred eighty-one".

Divisors: 1 3 9 27 193 579 1737 5211 15479371 46438113 139314339 417943017 2987518603 8962555809 26887667427 80663002281