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80233552687 = 693791156453
BaseRepresentation
bin100101010111001001…
…0101101101100101111
321200002121120210001111
41022232102231230233
52303304242141222
6100505255252451
75540155642141
oct1125622555457
9250077523044
1080233552687
1131032826732
121367207a127
137748639182
143c51bb2c91
152148c54777
hex12ae4adb2f

80233552687 has 4 divisors (see below), whose sum is σ = 80234778520. Its totient is φ = 80232326856.

The previous prime is 80233552673. The next prime is 80233552703. The reversal of 80233552687 is 78625533208.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-80233552687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80233552687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80233552667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508848 + ... + 647605.

It is an arithmetic number, because the mean of its divisors is an integer number (20058694630).

Almost surely, 280233552687 is an apocalyptic number.

80233552687 is a deficient number, since it is larger than the sum of its proper divisors (1225833).

80233552687 is a wasteful number, since it uses less digits than its factorization.

80233552687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225832.

The product of its (nonzero) digits is 2419200, while the sum is 49.

The spelling of 80233552687 in words is "eighty billion, two hundred thirty-three million, five hundred fifty-two thousand, six hundred eighty-seven".

Divisors: 1 69379 1156453 80233552687