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80257044743 = 431866442901
BaseRepresentation
bin100101010111110110…
…0010101000100000111
321200011020210022002122
41022233230111010013
52303331300412433
6100511455000155
75540562424121
oct1125754250407
9250136708078
1080257044743
1131045011657
1213679b0905b
137750472bb5
143c54d6a211
15214ad45198
hex12afb15107

80257044743 has 4 divisors (see below), whose sum is σ = 82123487688. Its totient is φ = 78390601800.

The previous prime is 80257044719. The next prime is 80257044757. The reversal of 80257044743 is 34744075208.

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 80257044743 - 214 = 80257028359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80257044694 and 80257044703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80257044793) 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, 933221408 + ... + 933221493.

It is an arithmetic number, because the mean of its divisors is an integer number (20530871922).

Almost surely, 280257044743 is an apocalyptic number.

80257044743 is a deficient number, since it is larger than the sum of its proper divisors (1866442945).

80257044743 is a wasteful number, since it uses less digits than its factorization.

80257044743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866442944.

The product of its (nonzero) digits is 752640, while the sum is 44.

The spelling of 80257044743 in words is "eighty billion, two hundred fifty-seven million, forty-four thousand, seven hundred forty-three".

Divisors: 1 43 1866442901 80257044743