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80083649687 = 471891697083
BaseRepresentation
bin100101010010101011…
…0111000010010010111
321122201011111220210112
41022211112320102113
52303002403242222
6100442342313235
75533355535146
oct1124526702227
9248634456715
1080083649687
1130a66150358
121362ba2881b
137723572482
143c39d1175d
15213a9e3be2
hex12a55b8497

80083649687 has 4 divisors (see below), whose sum is σ = 80085393960. Its totient is φ = 80081905416.

The previous prime is 80083649677. The next prime is 80083649693. The reversal of 80083649687 is 78694638008.

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

It is a cyclic number.

It is not a de Polignac number, because 80083649687 - 24 = 80083649671 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 (80083649677) 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, 801353 + ... + 895730.

It is an arithmetic number, because the mean of its divisors is an integer number (20021348490).

Almost surely, 280083649687 is an apocalyptic number.

80083649687 is a deficient number, since it is larger than the sum of its proper divisors (1744273).

80083649687 is a wasteful number, since it uses less digits than its factorization.

80083649687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744272.

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 80083649687 in words is "eighty billion, eighty-three million, six hundred forty-nine thousand, six hundred eighty-seven".

Divisors: 1 47189 1697083 80083649687